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Discussion Starter · #1 ·
Hi,

I'm getting ready to re-scape my 10 g. I have a bunch of Dwarf Hairgrass that's been in there for about a month that I'm going to divide up and plant to encourage it to form a carpet. I was thinking that I could put it under the filter, as it seems like the shorter hairgrass will be less bothered by the strong current than taller plants would be. It would also not impede the flow as other plants might.

This being said, I have a hang-on-the-back type filter rated for 5-20 gallons, and it creates quite a good amount of current. I was wondering if anyone knew how dhg reacts to high current. Will it have trouble getting started? Will the constant motion weaken its roots? I haven't been able to find any information in regards to these questions, so any advice would be helpful!
 

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It doesn't grow in the current in the wild as far as I know, (Eleocharis acicularis is native to north america, some people have E. parvula instead though.) but it probably can grown in current. Disturbing it probably doesn't make it too happy, but it might appreciate the thinning.

The only way to find out is to try it. You should leave some where it is, in case it doesn't like the current.

I have had DHG for a month and it hasn't done much yet, from what I can tell.
 

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Fear the Swamp!
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I had about 3 small pieces left over from another tank and I stuck it in my 125 gal which has a strong current. It took a while to start growing, but it's starting to spread recently.
 

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The Eleocharis sp. "Belem" I have seems to grow best in a good current. In the spots where there's less flow, the grass is a bit thinner than in spots that are in a direct current.
 

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Children Boogie
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yes, it grows fine in strong currents, especially if the current carries CO2.

I've seen hairgrass grow on the side of rivers. And I'm growing dhg right in front of a strong out-take.
 

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Discussion Starter · #6 ·
Thanks for the responses!

I decided to go ahead and try it, since, as seds said, the only way to find out is to try! The plant tag says I have E. acicularis.

When I dug up the clump, I was happy to find that it had sent out several runners on both sides, which gives me hope for its hardiness, considering that it has some algae problems, and I'd never taken it out of the rockwool!

With mistergreen's comment, it looks like it should do fine (as long as my fish leaves it alone long enough for it to get established!)

The tank is still a work in progress, I hope to add more plants (green ones) soon!

 

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Was the AC your "strong current"?

I've been growing hairgrass for a long time now, and it grows pretty much anywhere, so long as it gets a little CO2. It grows quickly in high CO2 environments.
 

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Children Boogie
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not sure how well it will do in plain gravel though. I don't remember it doing so well in gravel.

It does great in a rich nutrient or high cation substrate.
 

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Discussion Starter · #10 ·
not sure how well it will do in plain gravel though. I don't remember it doing so well in gravel.
Yeah, I know the substrate isn't the best, but I'm converting an existing tank to planted. There is laterite mixed in there, you just can't see it, and I did put some root tabs down, so I hope it will do okay. It did grow the runners in this substrate, which I take to be a good sign.

By the way, how do you avoid root tabs making your water cloudy? The ones I'm using seem to dissolve really fast, almost before you can get everything situated. I'm using API brand.
 
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