Fertilizing macroalgae

[Nevin]

Bassman, I might try that, though I would be surprised if the light weren't enough. It's 18W of 6700K light over about 1-1.5 gallons of water in the fuge area.

Dale, my intent was that the macro would help with nutrient export as my bioload increases. I do realize that doesn't work so well if I'm dosing additional nutrients, though I think it could be useful to dose nitrogen in order to make sure phosphates are used up. Currently, I suppose the main purpose is food for the urchin.

Maybe the urchin is the only problem here. I wouldn't put it back in the display--it's cute, but makes a mess dragging everything around. Could sell it if that's the only answer.

Regards,
Nevin

[spreerider]

i have chaeto in a 10g sump with a 18w bulb, and its growing like a weed, i went from a baseball size piece to a basketball sized in a month. i have a few hermits in my sump (not plummed into main tank yet) and i feed them every few days, i have a hob AC filter with nothing in it running to keep movement while i wait for my pump.

[ferret]

Hi,

Light should be enough and no need to add any additive to encourage the growth of algae, just to maintain a weekly changing of water ( 10% should be enough ) and adding of the 'caulerpa' macro algae in the sump would be good choice for this species supposed to growth fast.