wilt during light cycle PLZ HELP

Hey guy,

just ran into a problem with my rdwc. everything look fine about 3 days ago and i didnt do nothing out of ordinary. im on 1 week of flower and it wilting to their death. just check n ph is at 5.3 , gonna buy ph up in the morning. But just when i flip the switch instantly it start to wilt and recover during dark cycle. The temp is at 82-85. humidity at 40%. Root are still growing. Cube is not soak and not overwater or underwaer. im stress out tryin to find info about wilting. again just as i turn on my light it instantly wilt but just as i turn off the light it perk back up. im doing 12/12 right now and the plants wont survive or wilt pretty bad if it continue through the whole light cycle. Leaf are nice and green. i was thinking it might be overwater but as i ripe open the cube from 1 of the pretty bad wilting one, the root still look white , cube is not dry nor soak. i wouldnt think it be ph to make it wilt this bad. PLZ HELP!

1000W
RDWC
GH micro/gro/ bloom
humidity 40%
temp 82-85
plenty of air / airstone
ppm is at 900
plenty circulation inside room
no sign of root rots or batercia in water

LOST NOW

Post pics.

If you need an emergency PH up use hydrogen peroxide. I've used a quarter cup per gal without any negative consequences except ph+(H2o2 also gives roots more oxygen and prevents rootrot and fungus from forming).

You could use baking soda too for PH up but then you'll have salt build up.

Marlboro47 said:

Post pics. If you need PH up use hydrogen peroxide. I've useda quarter cup per gal without any negative consequences except ph+(H2o2 also gives roots more oxygen and prevents rootrot and fungus from forming).

Click to expand...

I just use zerotol last night . Funny thing is I search the forum and nobody seem to have the same problem im in. Im letting the cube dry up hoping it overwater. But I will post some pic tonight.
Also im using ro water.