Why is My Dwarf Hairgrass Melting? [7 Reasons + Solutions]


Every plant is unique and needs to be cared for differently. Find out why your dwarf hairgrass might be melting, what the possible causes are, and how you can avoid being in this situation again.

The “dwarf hairgrass” is a type of grass that grows in cool and moist areas. It can be found growing on the ground, or in pots. However, it is not uncommon for this plant to melt because of the high humidity levels. Here are 7 reasons why your dwarf hairgrass might be melting and what you can do about it.

Just looking at a pile of melted dwarf hairgrass is enough to make you nervous and upset. It’s much worse when you don’t know why it’s happening.

So you’re probably wondering why my dwarf hairgrass is melting.

It occurs as a result of a lack of individual growth area or inconsistent plant cutting. It might possibly be the sand at the bottom, which slows down development. Alternatively, depending on the size of your aquarium, the lighting and fertilization are insufficient.

Whatever the cause, it’s time to let go of your concerns since we’ve gone through the causes and solutions for dwarf hairgrass melting in great detail.

So let’s get started-

How Can You Tell If Your Hairgrass Is Melting?

Dwarf hairgrass fading seems to be rather prevalent. And we often get reports about dwarf hairgrass melting. 

So, what exactly do we mean when we say “melt”?

As a result, your dwarf hair grass will begin to turn yellow. Then, all of a sudden, the leaves begin to squeeze together. Your hair grass may begin to turn brown slowly but steadily.

As a result, we’ve chosen not to keep you waiting in order to rescue your plants. Let’s look at what’s causing your dwarf hair grass to melt and what you can do about it.

Why is My Dwarf Hairgrass Melting? (Reasons & Remedies)

why-is-my-dwarf-hairgrass-melting-7-reasons-solutions-9718138Barrreport.com is the source for this information.

If you’re interested in aquatic plants, you’ve probably heard about the conflict between micro swords and dwarf hairgrass. Finally, dwarf hairgrass may appeal to you because of its rich green appearance. But, friend, life isn’t always that simple. And no matter how much you love and care for these plants, they just won’t remain green.

Lack of Room 

Taking care of dwarf hairgrass is analogous to babysitting in certain ways. They may be even more fragile than genuine children, believe me.

That is why they need special attention. Now, if you have a smaller tank and are attempting to place large quantities of dwarf hairgrass without adequate spacing, you might reconsider, friend.

Because the usage of larger patches reduces the rate of expansion. Overpopulation causes dwarf hairgrass to become brown when patches are put without enough space between them.

So, if you believe that’s the case, don’t worry; we’ve got you covered. You’ll be OK if you just skim through the solutions.


So, what’s the solution to this spacing issue?

First and foremost, remove the dwarf hairgrass patches from your tank. If the aquarium is tiny, cut them into smaller portions. I always use the capetsma Aquascape Tools to achieve a flawless cut. Because it’s great for trimming and grooming aquatic plants.

A half-inch spacing between patches, according to a rule of thumb, ensures quick development.

Now, draw a line across the holes and place the repairs appropriately. Wait a few days, and your melted dwarf hairgrass will be back on track.

Simply go through the chart to clear up any doubt about how many patches you should apply based on the size of your tank.

Reducing Delays 

We’ll assume you’ve planted the hairgrass with enough space between each strand. Despite this, the situation has not improved.

So, if you’re still wondering why your hairgrass died off, then another reason behind this can be the Reducing Delays.

You’re probably wondering how this could possibly happen.

So, let’s take a look at a situation.

You’ve placed the hair grass and are astounded by its rapid development. However, while you’re enjoying yourself, it’s possible that the scenario in your tank isn’t so pleasant.

Because the dwarf hairgrass may turn yellow in a few days, much to your surprise. It also suggests you aren’t pruning it sufficiently.

Dwarf hairgrass is a delicate plant that requires continual attention and care. If you haven’t paid care to your plants and haven’t trimmed them, this might be the explanation for the hairgrass not coming back. 

Hairgrass will not regrow until you tackle the issue.

To be more precise, your dwarf hair grass’s pre-existing blades may not be suitable with aquatic circumstances. Furthermore, since you aren’t correctly cutting them, fresh suitable blades aren’t growing. 


Looking smart is essential for every occasion, whether it’s a date or a typical day. It’s true, buddy! Your plants, too, like looking their best. Trimming is, thus, the most effective approach to maintain things crisp or top-notch.  

Trimming DHG on a regular basis helps to distribute the carpet horizontally, in addition to making it seem crisp.

So, why do we need to clip dwarf hairgrass?

Trimming and maintaining the form of your plants is quite acceptable. Furthermore, if the grass isn’t mowed, it will grow to a height of 4 inches or more. You may say goodbye to a uniform carpet if this occurs. As a result, aim to keep your hair grass at a height of 1.5 inches or less. 

To cut a long tale short, 1.5-inch-high blades will enable the plant to establish new roots. Furthermore, it will produce new blades that will blend in flawlessly with the water in your tank. Finally, you put an end to the hairgrass melting problem. 

You may be searching for the right trimmer now that you know how vital it is to keep your plants trimmed, so here are some of our favorites —

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If you want to learn how to trim dwarf hairgrass, check out the video below:


Insufficient Lighting 

Proper lighting is required for any Christmas tree or aquarium. Plants as sensitive as dwarf hairgrass need consistent illumination throughout the year.

The tank size may be considered to guarantee appropriate illumination. So you’ve just purchased a large tank. However, the LED light in your tank is insufficient to supply it with adequate light. Or it’s just not right for the plant you’ve produced.

As a result, if your light is insufficient to meet the demands of plants, they may begin to melt. Because it is a carpeting plant, it has more stringent lighting needs.

Don’t get too worked up just yet since we’ve found a solution as well.


One of your plant’s most fundamental requirements is light. Regardless of whether they are aquatic or not, they will need light to blossom.

Because you’ve planted dwarf hairgrass in your aquarium, it’ll need plenty of light to thrive.

And the appropriate quantity and kind of light are important in more ways than one. Depending on the sort of tank you’re using to grow the hairgrass carpet, the illumination will be different. So, what are the light needs for dwarf hairgrass?

All you have to do is fill the tank with light that is at least 2 watts per gallon. The color temperature should be between 5000 and 7000 kelvin.

If you’re having trouble finding the right one for your tank, here’s a quick guide to tank and illumination compatibility:

Set up according to the fishery and species.Based on watts per inch of lightthe size of the tank (gallon)
Guppies, Angelfish, and Swordtail are examples of easy-to-breed species.10 watts5
Zebra Pleco, Yellow Tang, and other difficult-to-breed speciesten to twelve watts5-10
Difficult species mixed in with the reef, such as Dragonettes and Mandarin FishWattage: 12-23 watts5-40
Reef with a tough sp.Wattage ranges from 165 to 300 watts.50-180
Species that are simple to breedWattage: 10-23 watts10-40
Steepled Cling Fish, Madagascar Clownfish, and other reef species30-36inch 36-48inch 48-54inch 12-18inch 18-24inch125 125 125 125 125 125 125 125 125
Butterfly Fish, Gobies, and other mixed-breed species18-36-48-inch 36-48-inch 48-60-inch55-70-70-80-90-100-125-150-150-150-150-150-150-150-150

Now that you’ve determined which light is ideal for you, all you have to do is turn it on. You’ll be well on your way to eradicating dwarf hairgrass.

Apart from anything else, we favor these lights for hairgrass growth.

We hope that now that we’ve revealed our choices with you, you’ll be able to deal with your melting hairgrass. Now let’s move on to the next most likely cause of your hairgrass problems.

Fertilizers that aren’t right


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Trimming, lighting, and spacing have all been tested at this stage. We’re guessing that none of these options worked for you. And you’re trying to figure out how to protect the hairgrass from melting. If that’s the case, it’s time to take action. 

If you’re a gourmet, you already know the drill. It’s enjoyable to eat a lot, but it might make your stomach unpleasant at times.

As it turns out, your dwarf hairgrass is also a gourmand. What, on the other hand, is its favorite meal?

Nitrogen, phosphorus, and potassium are the most common elements. These three are incredible fertilizers. One of the primary reasons you don’t have a thick, active carpet is due to a lack of these elements in fertilizers.

So, no matter how much fertilizer you give the dwarf hairgrass, a lack of the right nutrients will result in melting hairgrass.

So, what’s the answer? If you scroll down, you’ll find exactly what you’re looking for-


So, proper fertilizers are the solution. Fertilizers will help your plant thrive.

Nutrients are, as we all know, a plant’s most fundamental need. As a result, you must ensure that your dwarf hairgrass plant receives the proper quantity of nutrients at the appropriate time. You may start dreaming about green hair grasses again if you maintain feeding the nutrients on a regular basis. 

However, picking the appropriate fertilizer might be difficult. Because you’ll hear titles like root tabs and others while looking for fertilizers for hairgrass development. 

If you’re unfamiliar with root, tabs, they’re little tablets that contain all of the vital nutrients.

So, to clear things up, we’ve compiled a list of Dwarf Hairgrass fertilizer varieties, sometimes known as ‘Magic Potions for DHG.’

Select the finest fertilizer for your dwarf hairgrass based on the kind of aquarium you have. Fertilizers should be used on a regular basis to maintain a healthy dwarf hairgrass carpet.

However, during the first month, it is advisable to use fertilizers twice a week to get the desired effects. Then, for green dwarf hairgrass, fertilize once a week.

Substance Made of Sand

It’s nice for your shrimps if you’ve filled the bottom of your aquarium with sand to give it a more beautiful aspect. However, it seems that if you’ve grown dwarf hairgrass indoors, it’s not so nice.


https://www.tankarium.com/ Source: https://www.tankarium.com/

Hairgrass requires a material from which it may absorb nutrients. Sand, on the other hand, is not such a material. So, even if you planted hairgrass on sand, you’ll need something else to keep the nutrients in the soil.

So that your plant can get enough nutrients even if it’s growing on sand.


So, if the aforementioned reason has you concerned about how to feed hairgrass on a sand surface, root tabs are here to help.

Whether you’re wondering if dwarf Hairgrass will grow on sand, the answer is yes.

It will, of course, but only on sand substrates. Place root tabs around the sand and you’re done. A fast advice is to plant the root tabs in sand that is at least 2 inches deep.

If you’re unsure about which root tabs perform best, know that we’ve revealed our favorite root tabs-

Now that you know which root tabs we like, perhaps it will work for you as well.

Algae Development

There’s a chance your dwarf hairgrass is being attacked by algae if it’s becoming white. There’s no reason to be concerned. This occurs if you don’t clean the water on a regular basis. The problem is that today, people grow algae on rocks for aquariums. Hair algae, on the other hand, are a frequent cause of dwarf plant melting.


There’s no need to panic; you can still repair it. Hair algae are prevalent and easy to get rid of. All you have to do now is raise the carbon dioxide level in the tank. For this, I utilize the co2 enhancer listed below:

If it doesn’t work, reduce the amount of light and maintain a steady water circulation.

Using nerite snails to remove algae is another fascinating option. How? Is it true that nerite snails consume hair algae?

Yes! Nerite algae are incredibly helpful in addition to their unusual hues. The algae from the aquatic plants is removed. They also maintain the cleanliness of the sand substrates.

Deficiencies in CO2 

Remember how your fourth-grade teacher described how we exhale carbon dioxide? We also know how beneficial CO2 emissions are to plants.

Well yeah, Deficiencies in CO2 might also be the reason why your plant looks depressed. If you’ve been ignoring the fact of injecting some extra CO2 into your underwater hairgrass, then it’s time to change it.

Because dwarf hairgrass, more than any other plant, need CO2 to stay alive. This is one of the primary causes of DHG melting.


Well, I like to use CO2 regulators since I’ve witnessed how they help DHG grow healthily and quickly. 

Many might argue that it isn’t required, yet I was able to get my outcomes. Regulators now come in a variety of shapes and sizes. The ones with solenoids and needle valves, on the other hand, are the ones you should use. So here are a few that we think you’ll enjoy:

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Because solenoids’ primary job is to switch off the regulator when there is no light, we propose them. You can now relax in your pyjamas while watching that thrilling football game without having to look at the lights.

Regulators with needle valves are also recommended for healthy dwarf hairgrass. Because a needle valve keeps CO2 flow at a constant and desired rate. 

Both of these regulators will maintain the bubble rate at 1-3/s, or roughly 30 ppm (parts per million), and your carpet will be rocking!!

Aside from that, you may rely on synchronized CO2 injections in conjunction with aquarium illumination to aid with DHG development. 

What Is The Best Way To Take Care Of Dwarf Hairgrass?


https://www.myaquariumclub.com/ is a good place to start.

Maintain a consistent temperature for your dwarf hairgrass plants to be healthy. Which is between 50 and 83 degrees Fahrenheit. Keeping the pH at a neutral level is also beneficial to the plants. It’s also a good idea to keep an eye on the light’s intensity. As well as the CO2 level. With the aid of a gh/kh test kit, you may do so.


By now, you’ve probably realized that the lush green carpet you desired requires some considerable upkeep. But why should you be concerned? It’s simple to care for a dwarf hairgrass.

We’re here to help you, as always. Here are three fantastic rules of thumb to assist you melt dwarf hairgrass.

Fertilize During the Day (Tip 1)

You may recall learning in school that plants are more active during the day. The same is true with dwarf hairgrass.

So, if you’re thinking of fertilizing your plant, the optimal time is throughout the day.

Give Iron Shots as a second tip.

If you want to see quick growth or an immediate effect from your DHG growth, we recommend adding more iron shots.

Don’t be alarmed by the title “Iron Shots.” The shots aren’t as powerful as they seem. 

Besides, administering an iron dosage is as simple as administering a CO2 dose. Simply inject it into the dwarf patches and you’ll be fine.

3rd Tip: Get to Know Your Plant

So, it seems that knowing your plant is vital since certain dwarf hairgrass kinds are sluggish growth.

There are three species of underwater tolerant dwarf hairgrass. These are the following: 

  1. Eleocharis Parvula, Eleocharis Parvula, Eleocharis Parvula
  2. Eleocharis Acicularis, Eleocharis Acicularis, Eleocharis Acicular
  3. Eleocharis Belem is a fictional character created by Eleocharis Belem

The E.Parvula has the highest growth rate of any of them, which is why it is more popular.

That isn’t to say you should disregard the other sorts. Even if the other two are slower growth, they are still rather lovely. If your tank is 10-15 gallons and you like seeing the small fishes float about, the other species are definitely better.

When you know the dwarf hairgrass type you’ve planted, predicting the growth rate is simple and stress-free. Because various species develop in different ways.

Tip #4: Create the Ideal Tank Setup

Here are some important considerations to make while building a tank for your dwarf hairgrass:

Temperature of the Water50-85°F
pH of the waterpH 6.5-7.5
[minimum] tank capacity10 quarts
[maximum] tank size6 inches


Is there any alternative surface that will keep hairgrass from growing?

Yes, coarse gravel, in addition to sand surfaces, is another difficult surface to grow hairgrass on. The most difficult aspect of cultivating hairgrass on gravel is establishing the hairgrass. Aquatic plant tweezers may assist you with putting up dwarf hairgrass on gravel.

How long does it take for hairgrass to begin to root?

It might take 6 to 8 weeks, depending on the time. If your dog is one of the breeds that grows quickly, 6 weeks is the ideal time frame. It might take up to 8 weeks for sluggish growers.

Is dwarf hairgrass contagious?

Yes, dwarf hairgrass spreads quickly enough. If the conditions are ideal, it may spread to form a wonderful fluffy carpet.

What’s the deal with my aquarium plants melting?

Aquarium plants may melt for a variety of causes. However, fluctuating carbon dioxide levels, algae infestation, unsanitary water, and inadequate nutrients are some of the primary causes.


You’ve mastered dwarf hairgrass melting causes and solutions by now. So now is the time to figure out what’s causing your problems and take action.

Remember to let us know if our solutions worked for you by leaving a comment.

Thank you for your time and consideration, and have a pleasant day.

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