White Widow, AK47 problem

[Scooby1057]

These plants are about 9 weeks into flower. About three weeks ago I’d halved the nutes and water for one feeding and they started drying out and browning out. I ph to 6.5 I use fox farm ocean soil and the big three fox farm nutes with a 600watt max bloom cob light.

[vostok]

How much perlite to the pot...?

I always recommend adding 25% perlite to any ffof pot

more so if you intend to add your own nutes later

at 9 weeks ensure you have a large enough pot

good luck

[Scooby1057]

Fox farm ocean forest. (Didn’t know to add it to this mix). They are also in 5gal pots

[Obi-Wan]

Judging by the location of the browning at the tops of the plants and and the abnormal foxtail like growth I’d say the plants are light And or heat stressed.

[dphipps1020]

What's the temperature inside your tent? I know heat stress was mentioned as a possible cause. Could possibly be caused by root rot as well. In soil, root rot is mostly attributed to too much heat in your grow space. If you have any Hydroguard or something similar you can add it to your water and it should help repair the roots and help prevent root rot in the future.

[Scooby1057]

Root rot!! I had plastic trays under pots. They were same size as the pots. The plants could have been sitting in stale water!! I’ve gotten bigger trays and elevated the pots with 3/4”pvc pipe strips. Hope this helps. I’ll also add that root stuff you mentioned.

[homegrown]

Hey Scooby1057 , gonna take a guess here...the rusty/crusty leaves are on the AK-47? Yes? I'v just finished my third grow of them and that seems to be common when closing toward harvest. I also ran my lights much closer than manufacturers specs. I did not have any foxtails though.

[Hensley]

It looks like it's reveging

[johnb1963]

you can also try adding black strap molasses to your water. i have read its really good for your roots.

[Jordann]

Really looks like a reveg on some. Do you have your tent in a light room or maybe timer is screwy and gives different light and dark times. I had a timer that would stick when it was supposed to go off then it would go off a few hours late. Was a digital timer. I went back to industrial timers. For the burn spots do you spray water by chance? Light burns through the droplets. But it could be advanced root issues as well, do you water to waiste or just water to moisture, some ferts build up in the soil and becomes more than the plant can handle if they don't get a good flush from time to time. Depending on the brand of nutes you use and your grow medium.