Quote Originally Posted by killakalimist
I'm no expert, nor am i an experienced grower but i'm thinking that your "froth" is algae due to the unused pots exposing the water. From what i've learned so far, you need to keep your water between 68-72 (although i have read a few posts that say 65-75 but I'll stick with the one that has less room for error) and let absolutely no light into the res.

As far as the algae on the rockwool, I have no clue on how completely get rid of it. But, as i understand rockwool is very suseptable to algae, so you want it covered from light aswell.

This i could be wrong about but I think a little H202 (hydrogen peroxide, the weak stuff i think its used for cooking, not the stuff for cleaning scrapes and burns) will help clean up res.

http://boards.cannabis.com/showthread.php?t=79230

you might find that link useful, for h202
blaze on
Thank you for the link, kill. I'll read it tomorrow. 'Fraid my bed is calling me right now.

I rather suspected that the froth was some sort of algea, but didn't want to say it and have someone call me a retard or something. Hmmm...cover the rock wool cubes as well...didn't think to do that. I'll do it as soon as I get home in the morning. I was leary of pilling the little rocks on the top of them at first cuz the babies were so delicate. I didn't want to chance them getting crushed should one decide that gravity was fun to play with.I'll definitely get it sealed up to light first thing in the morning though.

I read on some other thread on here that the res temp shouldn't get above 68, or something like that. I need to find that thread and reread it.

Thanks for confirming my suspicion about the froth.