Ok so the plants, they have been flowering for about 5 days now under my 600 watt HPS. Finished building the flowering chamber and got all my ducting/fans hooked up. I have a 450 cfm Valueline inline fan to cool the 600 watt through a air cooled hood. The air is pulled from my bedroom, through my veg/clone chamber and from there into my light, then through the attic and vent's outside the roof. Works pretty well, keeps the flowering room from getting hot. Also I have a 8" duct boost fan to exhaust the actual flowering chamber which also pulls air from my bedroom via a vent.
Temps stay around high 70's low 80's, however I did have a major problem the first couple days. Turns out I stretched my flexy ducting a bit too much and the heat from the light caused it to tear in a few spots around the light hood. This caused all the heat from the light to escape into my flowering chamber which in turn rose well over 90 degree's! And for how long, I'm not sure, but 3 of my plants got some nasty heat stress! I fixed the leaks and the temps are normal again, but hopefully the girls will all recover.
I'll get picks when it's "daytime", I'm running them at midnight to noon to keep temps down. I thought I would need a de-humidifier but as of now I got like 15-20% humidity in my flowering chamber, will probebly change the denser the foliage gets. Also not using a carbon scrubber yet, but when I do I will probebly upgrade the flowering exhaust fan to another valueline or something equivilant, the 8" duct booster works great for my small space, but it won't pull through a scrubber, no way!
I'm running them at just over 2,000 PPM's, 5.8 ph, and man are they drinking water! I will have to devise some kind of float-filler device to automatically dump RO water into the res once it drops to a certain level.
I'll get some pics when the lights come on, you can see the heat damage for yourselves. Lemme know if you think they will survive or not.
Oh yeah, one more thing. My res is reaching 73-74 degree's, aside from getting a water chiller (don't wanna have to do that!) can't I squirt some hygrozyme or similar stuff in there to prevent algea and stuff? I'm useing all organic nutrients, so I don't wanna use something that will destroy the nutes themselves.
Also I'm waiting on installing my Screen because I'm not sure exactly how high to mount it. For a typical SCRoG grow, how high do you normally mount the screen? These SSH are expected to get 5-6 feet, so I'm probebly gonna supercrop them again.