HC / Light Question

you did not say anything about the co2, IME co2 is the main issue when plants don't grow. HC is not really a light demanding plant, it wants more co2. i have 27 watts PC light hanging 28" away from substrate on my 4g and HC is doing well, co2 is the key here.

i think you have high light due to 16", but it might not cover all the area in your tank. keep the fixture in the middle or in little bit to the front, if you are going to add HC in the front area.

again co2 is the main key to grow HC. good luck

No, I did the Co2/EI index route and it was too much work.. I don't need a tank that can't sustain it's self for longer then 3 days.. I downgraded the light and just use some excel and this tank is awesome with very minimal work/maintenance (clean filter once every 3 months and top offs). I have dwarf hairgrass that grows nicely so I'm thinking HC has similar requirments. Hmmm, I guess we'll see, thanks!

I believe you're right though it makes sense.. HC I think mainly grows emersed where co2 is plentiful.