I can never grow Dwarf Hairgrass.... - The Planted Tank Forum
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post #1 of 22 (permalink) Old 01-13-2015, 01:30 AM Thread Starter
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I can never grow Dwarf Hairgrass....

Hey everyone,


No matter what I do, I'm unable to grow dwarf hairgrass. But first, tank specs:

20 gallon long
AC 50
Eco-Complete with gravel mixed in
Current USA LED 24"-36" light
Fluorite plant tabs in gravel

Every time I buy some hairgrass and put it in my tank, it turns gray and dies off. Could it be that I don't have enough light? Should I buy another light?
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post #2 of 22 (permalink) Old 01-13-2015, 01:57 AM
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looks like shrimp is your first priority... with AC 50 or sponge filter that means you are not planning on adding co2? How about liquid carbon? (a bit better than no co2 at all...)

may take a look
https://www.plantedtank.net/forums/sh...d.php?t=543209

I wonder if its start with DSM, it will eventually slim out slowly...

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post #3 of 22 (permalink) Old 01-13-2015, 02:03 AM Thread Starter
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I was thinking about adding Fluorish Excel instead of CO2. Think that would help?
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post #4 of 22 (permalink) Old 01-13-2015, 04:29 AM
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DHG loves co2. I've read claims of people getting it to live long term without, but but they're very much the exception. In my experience, it's not going to carpet without co2. I think with Excel it will at least survive, but if you want it to thrive, you'll want to add real co2.


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post #5 of 22 (permalink) Old 01-13-2015, 04:30 AM
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Co2


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post #6 of 22 (permalink) Old 01-13-2015, 01:57 PM
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I grew dhg to over 12" in a no filter mgopm only substrate in a windows that gets direct sunlight 2 hours a day. In my experience it needs a nutrient rich substrate and bright light. Otherwise I am like you, I cannot grow it.

If in doubt, add more plants!

My not-enough-plants-but-not-enough-space-to-put-anymore-so-will-start-going-up-box-of-water.

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post #7 of 22 (permalink) Old 01-13-2015, 04:50 PM Thread Starter
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I've never used co2, so how do I go about starting it? Do I buy a setup online?
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post #8 of 22 (permalink) Old 01-13-2015, 04:59 PM
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You definitely need co2 or liquid carbon. You can buy a co2 gas cylinder (paintball, 5lb or 20lb), a co2 regulator, some pvc tubing, and a ceramic co2 diffuser. Stick it under the flow of the ac50. Dhg grows like a weed in my tank. I keep pulling it out to try to get rid of it
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post #9 of 22 (permalink) Old 01-13-2015, 04:59 PM
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Quote:
Originally Posted by BonsaiGuy View Post
I've never used co2, so how do I go about starting it? Do I buy a setup online?
Yup. Don't need anything excessive, for a 20 gal tank. Might start with a paintball setup. I use the Aquatek Mini (see on Amazon), and a 20 oz paintball canister, cost about $100. Pick up a cheap glass nano diffuser on ebay (or several, a 3-pack can be had for like $10 last I looked) and some silicon airline hose and you're in business! Just need to find a paintball place to fill your tank, usually about $4 per fill, which should last you 6 months+.


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post #10 of 22 (permalink) Old 01-13-2015, 05:05 PM
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Quote:
Originally Posted by BonsaiGuy View Post
I've never used co2, so how do I go about starting it? Do I buy a setup online?
Yes. There is some decent info here on CO2 setups. I have DHG in two tanks. One always has CO2 and does fine, the other runs out of CO2 all the time and so I use excel to try and keep it alive. I can keep it alive (mostly) but I cannot grow it under liquid carbon alone. always have to use CO2.
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post #11 of 22 (permalink) Old 01-13-2015, 06:21 PM Thread Starter
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CO2 looks like quite a bit to get into, seems rather confusing. I don't even know where to begin, and that's after reading a fair amount haha
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post #12 of 22 (permalink) Old 01-13-2015, 06:39 PM
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for co2 that means u may need to change the filtration method. canister seems work best with small tanks. HoB and sponge by default breaks water surface and degas co2 fast.

if you just want a good carpet, try moss :p

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post #13 of 22 (permalink) Old 01-13-2015, 06:40 PM Thread Starter
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Originally Posted by thinBear View Post
for co2 that means u may need to change the filtration method. canister seems work best with small tanks. HoB and sponge by default breaks water surface and degas co2 fast.

if you just want a good carpet, try moss :p

Hahaha, what kind of moss are we talking here? Baby Tears?
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post #14 of 22 (permalink) Old 01-13-2015, 07:09 PM
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I have a hairgrass carpet across half of my 5.5 gallon invert only tank.

So, i've got insanely high light. A 16" planted+ fixture on a 12" tall tank with 2-4" of substrate gives blindingly high light. Second, root tabs. Third, sandy soil, specifically flourite onyx sand. Fourthly, i fertilize my water column. Full macros+micros. Fifthly, i throw in Excel. And lastly, i inject CO2.

With these measures in place, DHG grows like a weed! It grows up and outward at a moderately fast rate.
It looks awesome, but it's actually kind of a pain. It grows hair and clado all in it very well, and cleaning up the trimmings is a nightmare.

If you're using gravel substrate, you're probably not going to have good luck. It needs a sandy substrate and root ferts to do well.

If you want to give it a try, a cheap option is to grab a fluval 88 kit. When you're first cartridge runs out, grab the adapter and paintball tank. Splits the cost of setup and itll only run you about a hundred bucks. I've had good luck with it, but the diffusers are basically disposable, so have an extra one handy when the first one fails. You can even just buy the disk for the inside of the diffuser, and that reduces the cost a bit.

Cheers
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post #15 of 22 (permalink) Old 01-13-2015, 08:48 PM Thread Starter
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Quote:
Originally Posted by pheo View Post
I have a hairgrass carpet across half of my 5.5 gallon invert only tank.

So, i've got insanely high light. A 16" planted+ fixture on a 12" tall tank with 2-4" of substrate gives blindingly high light. Second, root tabs. Third, sandy soil, specifically flourite onyx sand. Fourthly, i fertilize my water column. Full macros+micros. Fifthly, i throw in Excel. And lastly, i inject CO2.

With these measures in place, DHG grows like a weed! It grows up and outward at a moderately fast rate.
It looks awesome, but it's actually kind of a pain. It grows hair and clado all in it very well, and cleaning up the trimmings is a nightmare.

If you're using gravel substrate, you're probably not going to have good luck. It needs a sandy substrate and root ferts to do well.

If you want to give it a try, a cheap option is to grab a fluval 88 kit. When you're first cartridge runs out, grab the adapter and paintball tank. Splits the cost of setup and itll only run you about a hundred bucks. I've had good luck with it, but the diffusers are basically disposable, so have an extra one handy when the first one fails. You can even just buy the disk for the inside of the diffuser, and that reduces the cost a bit.

Cheers

I do have root tabs, but that alone is not enough of course. I tried sand at one point, changed my mind because I didn't like the look of it. I'm looking into that Fluval 88 kit, decent price and probably worth a shot. However, as was mentioned earlier, am I going to have to change filtration in order to properly use it?
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