Frogbit vs Duckweed: Who’s Winning it?


The next time you’re in the grocery store, it may be hard to tell who’s winning this battle. But there are a few key differences that give some insight on which plant is really better for your backyard garden:

Frogbit and duckweed are both types of plants, but they have some differences. Frogbit looks like a small green leaf that floats on the surface of water. Duckweed is a type of plant that grows in wet places like marshes and ponds.

Considering adding floating plants but having difficulties deciding which ones to use? Don’t worry; we’ll help you choose the finest option for your tank. 

So, which is better: frogbit or duckweed?

Frogbit and duckweed, on the other hand, offer shade for underwater plants and betta fish. They purify the water by absorbing excess nutrients, producing oxygen, and absorbing excess nutrients. Frogbits, on the other hand, have lengthy roots and are visually beautiful. Duckweed, on the other hand, is an excellent source of protein for fish and shrimp.

This is only a taste of what’s to come in the rest of our section. Let’s get to the bottom of it for a more in-depth understanding of each of these plants.

Duckweed vs. Frogbit: A Quick Comparison

Frogbits and duckweeds are both attractive plants. They provide plenty of oxygen to the aquarium’s fish. However, you may want to know which one is best for your aquarium.

Is Frogbit suitable for an aquarium?

Yes, frogbits are ideal for aquariums with little fish. This is due to the fact that they float on the water’s surface. This provides plenty of space for the fish to hide in the shade.

Betta fish also benefit from the shade provided by duckweeds. When root tab and liquid fertilizers are compared, you may observe this sort of comparison. Because they all serve the same goal, although they vary in various ways.

So, what’s the difference, you may wonder? Here’s a comparison to give you a better idea of what’s going on.

PriceImageProductUptake of NutrientsRate of IncreaseDifficulty of Upkeep
Buy Now!frogbit-vs-duckweed-who39s-winning-it-6936527frogbit-vs-duckweed-who39s-winning-it-3621572FrogbitLowModerateMedium
Buy Now!1650338985_946_frogbit-vs-duckweed-who39s-winning-it-93131641650338986_843_frogbit-vs-duckweed-who39s-winning-it-9696968DuckweedHighFastEasy

However, if you require a more detailed feature comparison, look at the chart below:


This was just a brief scan to give you an idea of what’s going on. Now it’s time to get down to business! If you’re short on time, though, you may go straight to our suggestion area and make a pick.

Duckweed vs. Frogbit: A Comprehensive Comparison



In this chapter, we’ll compare and contrast their characteristics to discover which one shines out. This side-by-side comparison will show you which plant best meets your needs.

Tank Size

When selecting your perfect floating plant, tank size is an essential factor to consider. Each plant need a certain amount of room to thrive.


You’ll need a tank that can accommodate at least 20 gallons of water to raise frogbits. You’ll also need to make sure that this 20 gallon tank has enough lighting for optimal development. So, how big should a frogbit’s fish tank be?

To raise frogbits, a tank of 24″x12″x16″ is recommended. This is the bare minimum for plants and fish to coexist together. 


000b-5585429 is a good place to start.

A duckweed fish tank must be at least 20 gallons in size, comparable to a frogbit fish aquarium. 20″x10″12″ should be the minimum size. 

For these floating plants, larger tanks are preferable. Because they multiply at a rapid rate, doubling in number every 2-3 days. As a result, they may freely develop in large aquariums.

Frogbit is the winner if you have a tiny tank. You may select either one for a larger tank.

Controlling Nutrients

If you apply a little too much fertilizer, you may see fast algae development. This is due to an abundance of nutrients. Floating plants, on the other hand, may assist absorb this additional water and lower the risk of algae growth.


Because frogbits need phosphorus, you may supplement with Seachem Flourish Phosphorus if necessary. They, too, need nitrogen and oxygen to survive and thrive. As a result, you may adjust the amount of N-Primer Nitrogen Supplement in your fish tank.

In addition, the nutritional absorption of frogbits is pretty good.

As a result, it will absorb all of the additional minerals and nutrients in the water. These, on the other hand, do not absorb CO2 from the water.


Duckweed absorbs nutrients significantly more efficiently than frogbit. They use the water to absorb nitrogen, potassium, phosphorus, and other micronutrients. Furthermore, they take a huge quantity of CO2 from the water, bringing the level back into balance.

As a result, you may utilize the following substances to improve their health:

Duckweed is the winner since it absorbs both nutrients and CO2. 

Uptake of Nutrients

The Uptake of Nutrients is quite varied among these plants. Having a lower uptake is better. This is because it leaves more nutrients for the fish and other plants. Let’s see how it affects the aquarium ecosystem.


Minerals and nutrients are mostly obtained by frogbits from fish excrement and fertilizers. They take 30.1 percent of the nutrients available. Frogbits, on the other hand, have a lower uptake than Duckweed. This provides enough minerals and nutrients for the fish and other plants in the aquarium. 



Pinterest ( is a great place to start.

Duckweeds, on the other hand, devour 83.7 percent of the nutrients in the water. In compared to Frogbit, they consume a lot of CO2, but they leave behind less nutrients. As a result, only use duckweeds when your tank has fewer fish. 

Otherwise, if there are too many fish, they may perish due to a shortage of nutrition. 2HR Aquarist and API Leaf Zone are excellent liquid fertilizers to utilize in this situation. This will supply additional nutrients to your aquarium, allowing your plants and fish to thrive.

If you have a lot of fish, opt for the frogbit. If everything else fails, go with the duckweed. 

Rate of Increase

Frogbits and duckweeds are both fast-growing plants. As a result, they need a huge surface area to develop without being disturbed.


So, how quickly does Frogbit grow?

Yes, Frogbit develops quickly. They’ll double in 14 days if you give them enough light and keep the pH between 6.0 and 7.5. You’ll see a new leaf developing every two days!


You’re probably wondering how quickly duckweed grows.

Duckweeds, on the other hand, take ten days to double in quantity. As a result, they develop significantly more quickly than frogbits. They are, in fact, one of the most rapidly growing floating plants you will ever see. 

Duckweed is the winner. is unsurpassed in terms of growth!


Shrimps and other small fish are excellent tankmates for both frogbit and duckweed. Other root feeders and stem plants, such as Alternanthera Lilacina, may be combined with duckweed and frogbit.


You’re probably wondering whether shrimp enjoy Frogbit.

Shrimps do like frogbits. However, they just eat the frogbit’s roots, which destroys the plants. As a result, frogbit doesn’t last long in shrimp aquariums.

In your shrimp tank, however, you may use Thrive S Shrimp Specific Fertilizer. This will prevent the shrimps from consuming the frogbits’ roots.

Crowntail, Veiltail, Plakat, Halfmoon, elephant ear bettas, and more species may be kept with shrimp. Because frogbits prefer to hide behind the leaves, they are ideal for frogbit aquariums. In your frogbit tanks, you can also add the following helpful aqua plants:


The issue now is whether shrimp like duckweed.

Duckweeds are a favorite of shrimps. Duckweed is a good source of food for them. These have a protein content of 35-40%, which meets the nutritional needs of shrimp.

Furthermore, shrimps that consume these plants do not injure them in the same manner as frogbits do. This is due to the fact that duckweed reproduces quickly. 

Additionally, they are ideal for plants and fish that like low light and shadow. Betta fish and low-light vascular plants, such as Java moss and Anubias, are excellent examples.

In this circumstance, duckweed is the superior tankmate for shrimp. 

a water meter


Their growth is influenced by the kind of water, temperature, and pH. As a result, you must precisely manage the levels for these plants!


For developing frogbits, the pH level of the water should be between 6.0 and 7.5. The water in the tank must be gentle, with a hardness of 10-12 degrees.  

Water conditioners such as API TAP, Aqueon TAP, and Seachem Prime may also be used. This will aid in the preservation of the water’s smoothness.

Is it possible for frogbit to develop in cold water?

Frogbits will not grow in cold water, unfortunately. To flourish, they need an ideal temperature of 18–26°C and a medium to high intensity of illumination. 


Duckweed, on the other hand, thrives at a pH range of 6.5 to 7.5. Furthermore, unlike frogbit, they can grow in both soft and hard water at temperatures ranging from 15 to 32 degrees Celsius. However, you may check the pH level of your tank water using RUNBO Aquarium Test Strips to be safe. 

Duckweed gets the award because it can grow in any kind of water.


Light is required for the growth and survival of duckweed and frogbit. So let’s see how much light they need to grow properly. 


Will Frogbit grow in the shade, you may wonder?

Frogbits, however, cannot thrive in the shade. To develop, they need a medium to high level of light. They could turn yellow and perish if they don’t.

As a result, make sure you can give 10-20 lumens of light per liter of water for your frogbits. These plants need at least 8 hours of light every day to grow. 

You can learn all you need to know about lighting in various planted tanks by watching the video below.


Now, for your convenience, we’ve compiled a selection of high-quality LED lights. Take a peek at:

BuyImageLight for AquariumsBenefits
Place your order right now!1650338990_768_frogbit-vs-duckweed-who39s-winning-it-66161801650338991_453_frogbit-vs-duckweed-who39s-winning-it-2579510AQUANEAT LED Light for AquariumsThere are no restrictions on the size of the rims.
Place your order right now!1650338992_998_frogbit-vs-duckweed-who39s-winning-it-16709281650338993_219_frogbit-vs-duckweed-who39s-winning-it-4877382AQQA Light for AquariumsAdjustable Extendable Bracket

You can be sure that your prized plants are receiving adequate light if you use one of these.


Duckweeds, on the other hand, don’t need nearly as much light. Even under low-light conditions, it may grow. So, if you have little fish that want to be in the shadow, this is the way to go.

If you don’t want to deal with the added trouble of lighting, go for the duckweeds.

Care & Maintenance

moreduckweedroots-6185857 is a good place to start.

Frogbits and duckweeds don’t need much maintenance. However, you must keep an eye on them on a frequent basis. Otherwise, there’s a danger your frogbit may die from exhaustion.


Frogbit requires a little more attention than duckweeds. They mostly get their nutrition from fish and plant waste, although they do need supplementary nutrients. 

As a result, you’ll need to apply liquid fertilizers and nutrients on a regular basis. If you don’t, your Frogbit will become yellow.

Only 33 milliliters of fertilizer per liter of water should be used. Liquid fertilizers such as NilocG Aquatics or Vimi All in One Fertilizer are excellent options.

You must also provide enough of light while caring for frogbits. They also grow at a rapid pace. So, how can you keep Frogbit under your control?

By removing the Frogbit, you can keep them under control. Remove 13 of the frogbits using a PENN-PLAX Quick-Net aquarium fish net. Once a week, do this. 

The sea waves are to blame for the frogbit roots dropping out. To prevent this, maintain the frogbits in a continuous stream of water. In this scenario, you may use any of the plant separators listed below:


You must also remove them in order to restrict the development of the duckweed. Take half the quantity out each week using a net like the one we recommend for frogbit management. 

Duckweed roots that break off are a symptom of nutritional deficit as well. As a result, add 30ml of Seachem Flourish Excel or API Co2 Booster liquid fertilizer to the mix. To keep your roots from falling out, do this once a week.

Remove any decaying or yellowing duckweed that you see. Additionally, to ensure appropriate duckweed development, maintain the water tank constant.

Duckweed is simpler to keep up with than frogbit.


Duckweed and frogbit are both decorative floating plants. They enhance the visual appeal of your aquarium. 


Frogbits have leaves that are 2-3cm broad and spherical in form. The roots of these plants may reach a length of 50 cm. As a result, your tank will have an underwater appearance. 

Furthermore, the leaves form a light-and-shadow equilibrium. As a result, it has a really appealing appearance.

These plants may also be displayed in a POPETPOP Aquarium Landscape Ceramic Plant Pot.


Duckweeds, on the other hand, have smaller, rounder leaves and greener roots than frogbit. They have a tendency to cover the whole surface of the water, creating a gloomy habitat under the surface. As a result, you may utilize Ceramic Aquatic Decor Plant Cup in this situation.

Frogbits are more appealing than duckweeds in terms of aesthetics.


Both frogbit and duckweed are beneficial to aquarium fish and plants. Let’s have a look at how these floating plants might improve the value of your aquarium. 


The advantages of having a frogbit aquarium are many. They maintain the water clean and algae-free by supplying oxygen to the tank. 

Their lengthy roots capture food and absorb additional nutrients for the fish. Furthermore, they use less nutrients, allowing other plants and fish to thrive.


Duckweed aquarium advantages are also available. They, like frogbit in the aquarium, produce oxygen and keep the water clean. Duckweed may also be used as a source of food for fish and as a source of shade. They do, however, use a lot of nutrients and aren’t recommended for tanks with a lot of fish.

Winner: Frogbit is superior in terms of ecosystem preservation. 

Frogbit or Duckweed: Which Oxygenates the Water More?

1650338995_336_frogbit-vs-duckweed-who39s-winning-it-5251638 Source:

Assume you have an aquarium filled with plants and fish. Now that there is a lot of CO2 in the water, algae growth is out of control. Your tank water will smell and seem unclean as a result of this. As a result of the shortage of oxygen, you’ll observe the fish swimming towards the surface.

Duckweed will function best in these situations since it produces more oxygen than frogbit. This is due to the fact that these plants are dense, requiring more CO2 to create oxygen. If there isn’t enough oxygen, the fish and other vegetation will perish. 

Duckweed is the winner.

Frogbit or Duckweed: Which Is More Valuable?

Duckweed is the most cost-effective option. You can acquire 500 of them for about $4-$6 each. 12-14 frogbits, on the other hand, might cost anywhere from $14 to $20. 

In addition, you’ll need fertilizer for each of them. Depending on the size of your tank, this will cost an additional $25-$50. The finest budget-friendly solutions are Glosso Factory and Aqueon Aquarium Plant Fertilizer.

The fact that these plants are a one-time purchase is also a plus. Because they’ll multiply by two every two to three weeks.

Duckweed is the winner.

So, which is better: Our Opinion or Our Recommendation?

Duckweeds are now a lot simpler to keep up with. Furthermore, plants provide excellent food, shade, and oxygenation for your aquarium. Duckweed also takes the lead in terms of price, and they double in number quicker!

Frogbits, on the other hand, may need a little more attention. They are, nonetheless, incredibly attractive. So, if you’re just seeking for a decorative appearance, frogbit may be for you! Check out a comparison between frogbit and salvinia minima if you’re still confused.

If you have a shrimp tank, the duckweeds are a good choice. If you have a betta fish tank, however, go for frogbits.

Finally, here is a summary of our whole talk. Take a look and vote for your favorite. –

ImageTitleWhat are you better at?price
frogbit-vs-duckweed-who39s-winning-it-6936527frogbit-vs-duckweed-who39s-winning-it-3621572FrogbitIt’s excellent for the environment and it’s fantastic for the aesthetics.Place your order right now!
1650338985_946_frogbit-vs-duckweed-who39s-winning-it-93131641650338986_843_frogbit-vs-duckweed-who39s-winning-it-9696968DuckweedShrimp meal that is simple to maintain.Place your order right now!

So, that’s pretty much all we know about frogbits and duckweeds. 


Is Frogbit lettuce or water lettuce?

Frogbit and water lettuce are not the same plant. They have clover-like leaves that are lilypad-shaped, so they seem to be the same. This is why frogbit is also known as miniature water lettuce. Frogbit, on the other hand, is smaller than water lettuce.

Is Frogbit poisonous?

No, frogbits are not poisonous. They increase oxygen levels in the water and inhibit algae growth. Frogbit roots trap food for little fish and are beneficial to aquatic plants. 

Is duckweed a plant with roots?

Duckweed does, in fact, have little, greenish roots. Their roots, known as fronds, are practically imperceptible. Duckweed uses these fronds to collect nutrients from the water.


That’s practically everything you needed to know about frogbit versus duckweed before making your decision. We hope this information helps you in making a decision between these two options!

Now, if you have a small tank but you want to use duckweed, lessen the quantity. Use about 100 plants and observe their Rate of Increase. You can add more if you deem it necessary. But make sure to clean out half every week, otherwise, it’ll be too much!

Take care till next time, and happy fishkeeping!

Frogbit and Duckweed are two different types of plants that are often confused. But, they are not the same thing. Frogbit is a type of duckweed that has been cultivated to grow larger than its wild counterpart, but it still needs plenty of water to thrive. Reference: giant duckweed vs duckweed.

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