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18x10x10, lights vented with intake/exhaust, fresh air intake 24hr. carbon filter exhaust 24 hr. temp 75 inside...80 outside...RH 44%...Co2 15 min every 3 hrs...fans off...feeding 1300 ppms 4x on 6, 10, 6, 10 min schd. ph at 5.8 RO water. airstones in the tank, water temp 67.7...what can cause...

the room is 18' x 10' x 91/2'. I have 6 8" magnum xxxl hoods. If i connect one 8" inline canfan for exhaust and connect one 8" inline canfan for intake will it work? 3 vents coming out of the intake into 3 hoods, which inturn are attached to another 3 hoods by 8" vents. 3 vents that are coming...

10 days in veg, 75% of clones have roots coming out of 6"rockwool cubes...ppms at 850, ph 5.8, temp 77, humidity 40 to 65, res temp 72, 1000w MH 18/6...flushed 3 days ago...I only have 1 inch of growth in 10 days...I believe the clones were cut of mother plants that had just been put into...

just put 2 week clones into veg...after 8 hours im seeing some major damage to leaves...need help ASAP!!!..thanks

Hello galz and guyz...need major help on my first grow room...and unfortunately time is not on my side... Details: flood and drain... Grow room size: 8x18x9 Lights: 4, 1000w MH trays: 2, 4x8 Res: 2, 70 gl Medium: 6" rockwool surrounded by hydroton fans: 2, 8" max-can fans exhaust air out of...