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Fresh Fish Freak
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I think you'll definitely need to dose Excel if you don't do CO2; those lights are more powerful than they may appear (I own 2 of those fixtures, I do quite like them)

Hairgrass also doesn't tend to do much without supplemental carbon. If you substituted E. tenellus (narrow or micro) it might fill in a bit better even w/out.
 

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Discussion Starter #5
Hmm, another question.. sorry :X

if i got the riccia(fluitans or dwarf, still unsure), will they do alright with the light i posted link for above? that would be 1.8 wpg, when i recently read they do well in higher lights,(eg 2.0-2.5 wpg)???
 

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It depends on how you want to grow the Riccia. If you are growing it floating, you should have no problem, but if you are growing it submerged, you will need higher light and CO2 in addition.
 
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