After much reading and research Mg def is being caused by low ph. Which is now tiring into lockout.I've had septoria a handful of times, I don't believe it septoria, but I wouldn't rule out some type of a fungus issue yet, need sharper pictures of the spots.
PH could also be a factor of course, although looks a little dark for calcium spots?
No idea what to do regarding cocoa growing but I use Dolomite to raise and stabilize my pH in soil, don't know why it wouldn't work in Cocoa but maybe somebody else can tell you better than I good luck
doesn't look like mag to me, good luckAfter much reading and research Mg def is being caused by low ph. Which is now tiring into lockout.
My main concern at this point is why does the Ph drop after flushing with pure 7.8 ph water at 330ppm (tap water). The ppm in and out are virtually unchanged flushing but when checking the coco ph after like 1/2 hour it’s back down to 5.0. I can’t figure this out.
Ph will drop if you are having root issues since the plant is not taking up nutrients they build up and the ph starts going down. Also coco is notorious for cation exchangeAfter much reading and research Mg def is being caused by low ph. Which is now tiring into lockout.
My main concern at this point is why does the Ph drop after flushing with pure 7.8 ph water at 330ppm (tap water). The ppm in and out are virtually unchanged flushing but when checking the coco ph after like 1/2 hour it’s back down to 5.0. I can’t figure this out.
Shouldn’t the built up nutes start to wash out and the natural ph of the water take over after flushing about 5 gallons of water?Ph will drop if you are having root issues since the plant is not taking up nutrients they build up and the ph starts going down. Also coco is notorious for cation exchange
I'm not a coco grower and don't understand it that well but I remember something about it buffering ability and cation exchange in many posts. Maybe @Enforcer could explain it. If you were in DWC or RDWC I could help ya but I'm pretty sure it has something to do with the coco itself needed to be conditioned. Like flushing with cal mag. But again I'm not familiar with coco so best to let the coco guys who understand it fill ya in.Shouldn’t the built up nutes start to wash out and the natural ph of the water take over after flushing about 5 gallons of water?
I can see at first it going back down but after 5 gallons of water I’d hope to have seen more of a change in the coco ph.
Thanks!I'm not a coco grower and don't understand it that well but I remember something about it buffering ability and cation exchange in many posts. Maybe @Enforcer could explain it. If you were in DWC or RDWC I could help ya but I'm pretty sure it has something to do with the coco itself needed to be conditioned. Like flushing with cal mag. But again I'm not familiar with coco so best to let the coco guys who understand it fill ya in.
I know when there are root issues nutrients build up and lower ph.
I also know that coco's buffering ability is largely affected by cation exchange.
At this point I’m not sure what to do. I’ve put 6+ gallons of water thru them. My coco ph in the pot is showing 5.3 after nearly 2 days of flushing with water as stated above. This is the second grow round for me and the first plant didn’t have any issues like this at all (heat yes. nutes and ph, no). These plants are the clones from the first one.Don’t worry about the pH of the runoff. You’ll be chasing ghosts. Your water ppm is a little high. You may want to look into an RO filter. Until then make sure you take the ppm of your tap water into account when mixing up your nutes.
I figure when I start feeding again I will try about 800-900 ppm total (water +nutes) and see how that works. I just don’t know if I should try feeding with the coco ph as low as it’s wanting to stay.Until then make sure you take the ppm of your tap water into account when mixing up your nutes.
I would feed at 6.0-6.2 and just see how they respond. Try not to change too much too quickly.I figure when I start feeding again I will try about 800-900 ppm total (water +nutes) and see how that works. I just don’t know if I should try feeding with the coco ph as low as it’s wanting to stay.
You could crush and dissolve a couple aspirin overnight in water then use a cotton swab to dab those blotches. Or neem oil on the infected fan leaves. It could be a deficiency/lockout but i would try to cover every possibility. Good luckInteresting read. Is it only foliar feeding or is this also for fertilization? Second thought, will it harm the existing buds if foliar fed or should I not do that at this point to avoid any further possible damage?
Feed no more then 500ppm, just feed more often. Coco feed daily if the plants are healthy, you with the issues , I’d say feed 4th watering: let the plant use up the nutes. 4th watering in coco is every other day if u water 2x a day. Least that’s what I do.I figure when I start feeding again I will try about 800-900 ppm total (water +nutes) and see how that works. I just don’t know if I should try feeding with the coco ph as low as it’s wanting to stay.
^Start over in some promix. Coco is no way to do your first grow.
While I have considered it, I don’t quit. I’ll learn lessons and improve this way. Starting over isn’t as valuable. This also isn’t my first grow. Just my first year...I started in April and I believe heat made it nanner at day 40. That plant is below in the pics from the side and top. Same grow space same everything as these plant just too hot. 85-87 for several days. That has been corrected. These top out at 80 around their 8th or 9th hour lights on.
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