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nice plants, 75-78 is ideal but 80 is pretty good. that 250 should be cake to cool, you might need a higher cfm exhaust is all. a surefire way would be to aircool the light and just keep the exhaust fan you got.

the intakes not necessary if you run a decent exhaust just use passive, and if your temps stay right you can use the one main exhaust and be just fine.

too much water, you should allow the rockwool to dry out then water. figure out how long this takes and set your timer, or if your gonna be around run the pump manually for a while.

stems are a bit purple, fix your ph and nutes. the leaves look to be pretty healthy. those clones will take off soon.

what ph are you running, what is the ppm of your tap water, and nute line you are using? sometimes you can have too much calcium that leads to lockouts if your tap is over 220 ppm and using heavy nutes.

plants like 75-78 degrees. if you can, keep them there 24/7. i always over do fans, go big. these links should help. https://www.rollitup.org/hydroponics-aeroponics/94811-al-b-faqt-5.html https://www.rollitup.org/newbie-central/200093-fans-making-my-head-spin.html

you need some real fans. the mention no room for a bigger fan, the fan does not need to be located in the room. heres al b fucts diagram.

messed up posting here.

the concept is the same with a closet here. https://www.rollitup.org/hydroponics-aeroponics/94811-al-b-faqt-5.html https://www.rollitup.org/marijuana-pics/images/1698/large/1_ventilation.gif

no need for an active intake if your exhaust will be pushed out of the building. passive should be fine.

looks good, it might restrict air flow a little but if your temps are right i would say use it.

may i suggest hempdepot.ca or bidzbay

hobbes always on point, nice answer.

hempdepot.ca worked for me!

wouldnt use the peat moss in a hydro setup. you should gro in dirt and make some clones in a few weeks.

this is easier, https://www.rollitup.org/newbie-central/200093-fans-making-my-head-spin.html

if using hard tap water ppm > 220 get the gh micro for hardwater

isnt kool bloom just sugar? if not whats in it?

who gives a shit if its organic, whatever works, works.