you will be fine but i recommend using a controller. I just received mine this morning.
this is what I got.
SENTINEL CPPM-1 CO2 CONTROLLER W/PHOTOCELL FREE SHIP - eBay (item 140257792257 end time Aug-22-08 20:30:43 PDT)
I was going to tell you to flush after you poop but I see you tricked me.
Flush any time you want to clean the plant out.
Your gonna get a lot of different answers as to when the right time is to flush before you harvest. I assume that is what you mean. If I were using soil, I would flush...
you can also measure using ec which is electrical conductivity. Pure water should have no conductivity so as salts(nutrients) are added they are conductors and can be measured in the water using a meter. My meter measures the EC and PPM.
You can't really do that because the roots will grow out of the rockwool very fast. At the point this happens you will need to start watering at least 3 times a day during day hours. Rockwool is used for hydro because the hyrdroton or whatever you are using hides all the roots in it and keeps...
My wife got into blowing me a lot for like a week and now I want her too everyday but apparently it doesn't work like that. So I beat off like 3 times a day now. She has me going crazy. Pussy control is a wicked thing.
They look fine for plants growing under a couple of fluorescent lights. Don't expect much weed when finished.
Plain and simple you need more light buddy. At least try to get that outside if nothing else. I still say don't expect much though.