Join Date: Feb 2006
Location: San Francisco, CA
I would say medium lighting. I know its enough for HC because I've seen many members grow it successfully in 18w of light in a 2.5 gallon. I've growing it well in a 2 gallon with 18w.
CO2 is not required if you dose Flourish Excel. But CO2 will make your plants grow very well.
On a side note, I have a 20 watt light on my 2.5 gallon and I don't dose anything, no CO2, and my plants are very happy. Not the fastest growth on some of my stem plants but my HM is growing like mad. It's probably because my 20 watt is a screw in spiral flourescent, making the light maybe a 15 watt or something.
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