guys i need help again. ph is 5.5 light nutes. idk whats wrong. leaves keep getting yellowish. and brown starts from outside of leave and moves in. it cant be a phos def. cuz theres alot in my grow nutes. and cal mag cant be it cuz i feed with molasses to feed the beneficials. so idk whats wrong.
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last one is of one that has the claw. might be underwatering since i hadnt watered in 2 days. but idk but the rest.
Hi smoothness, please don't think I'm hating on you, because I'd like to see you succeed. But here's my thoughts on your grow.
First the 7 1/2 gal trash can is way to large. If your container is over 14" tall you are extending the root setting time way too much, which isn't efficient. When you say trash can I envision something 24 tall.
Get rid of the molasses, I would never put a raw sugar in a passive hydro, maybe in an active system where it keeps mixing into solution. And I've never seen a perlite (or couch) grow using molasses. Get rid of the other additives to benefit microbe, stalk, stem, budsite,or whatever, growth. Just go with your basic NPK & micros. This will remove a lot of variables.
Ph is too low but that's been addressed.
Now your plant problem. All the damage is in the older growth, which means the problem is with a mobile nute, (N,P,K,Mag) you can see that the lower growth is giving itself up to feed the new, which isn't pristine, but still growing. So either you're not giving them any food or there is a lockout.
Lockouts could be from too much CA or MAG, or PH there are others but those are the biggies.
S..skunk asked about your nutes,,,,, what brand and what is the NPK and does it have any micro nutes included?? (boron, zinc, copper, iron, etc)
Also please enlighten me on the dimensions of the 7 1/2 gal container.
Actions to take.
I'd think about putting them in smaller containers, but I don't know what your container dimns are.
Tip and carefully Drain off as much of the rez as you can out the hole. I would then take straight tap water and run many gals through the medium (put em in the tub or kitchen sink) just to fully rinse the medium out. This is where perlite shines, it rinses out well. When finished flushing tip and drain the rez again. Let it sit for a cycle (12hr). Now water with ph 6 & nutes, a little stronger than base at this point of the grow. Since that base point hasnt been established yet, maybe stick with the level you were at. Maybe some other EC feeders could throw an estimate in. Then from here on out youll have to water at least once a day. Id recommend to 2 light waterings daily. You may want to read Rustys 1[SUP]st[/SUP] hempy journal he details daily light watering well,
https://www.rollitup.org/grow-journals/535354-my-first-hempy-bucket-grow.html
Its not my watering style but he nailed it in the end. And until you hit the rez youll need to water frequently to get aggressive growth.
Now you mentioned that your tap water was 200+ ppm. Do you have any mineral buildup on your faucets?? This would be a sign of mineral salts in your water.