Rdub
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As an outdoor grower I'd say easy on the nutes and see what happens. I know plants in coco need daily feeding but too much will cause a nute lock out and you end up with with all kinds of problems. Lighten it up for a few days and see what happens.Hey guys this is the 4th site I’ve asked as every answer I’ve heard has been wildly differen. I’ve heard nute burn, cal deficiency, And P deficiency. I’m leaning forward nute burn but I don’t know what to think anymore. A little background on the grow to help out. Using ff hydro trio running around 850 ppm. Plants are 6 weeks old . Trainwreck strain. SolarSystem 1100 lighting. Temps from 68-75, rh from 46-55. Grown in Autopots. Auto pot reservoir checked daily and Ph to 5.8~. Medium is 50/50 coco perlite. So now with the issue. Starting as small brown spots on lower fan leaves until consuming the whole leaf. At first it was just one of the 4 plants affected now it’s 3 of the 4. I forgot to mention I’ve been supplementing with full strrenghth Cali mag. These pictures are from last week and it’s gotten considerably worse. 2 of the plants affected are barely growing. Anyway pics below and thanks for looking
I don’t have any runoff because I don’t top water. It’s wicks from a tray underneath it. It’s also under a Scrog screen sonlifting it up is pretty much impossible without breaking branches, but I have measured the solution in the tray after 24 hours and it all check out. When I though it was a bite deficiency I foliar fed 3 nights in a row with full strength nute solution so .... technically water did splash on it and that’s when it really started getting bad. I learned from that mistake but now nite burn is making more sense huhToo much of of one nutrient can cause deficiencies on another, so this might be one reason that you get different answers. Have you measured your runoff PPM and Ph? Too much Cal-Mag can raise the Ph and cause magnesium deficiencies, which is sort of what it looks like you have. If the Ph is incorrect, nutrients won't be available for the plant to use, despite a ton of it being in the soil. FF products are usually pretty strong, so the 1st thing I would try is to determine what your drainage water looks like, as far as PPM and Ph are concerned. After that, it will be easier to determine what the problem could be... an overfeeding, and underfeeding, or a deficiency caused by nutrient lockouts. The plant looks fine as far as watering and sun goes, but something isn't right in the root zone unless you are splashing stuff all over your leaves, which is unlikely.
The devil is in the details!
I don’t have any runoff because I don’t top water. It’s wicks from a tray underneath it. It’s also under a Scrog screen sonlifting it up is pretty much impossible without breaking branches, but I have measured the solution in the tray after 24 hours and it all check out. When I though it was a bite deficiency I foliar fed 3 nights in a row with full strength nute solution so .... technically water did splash on it and that’s when it really started getting bad. I learned from that mistake but now nite burn is making more sense huh
Thanks and good advice . Will definitely do that. Oh and a big thanks to everyone that’s chimed in. this has easily been the most helpful of the forums so far.850 is hot for a 50/50 coco mix imho. I'd be running more like 300-500. And feed the cal seperate if possible, ideally top fed with a wand to keep it out of the res. When you get too many free nutrients like calcium and phosphorus in the nutrient solution things start coming together to form insoluble compounds like calcium phosphate, locking them out of the plant.
I'd let the bottom res dry up and top feed with some 300ppm nute solution, then bump back up to 400-500 in the res for the wick, should sort things out
Do you have a water softener system? I had one, didn’t think about the salt and I ended up with the same results.Hey guys this is the 4th site I’ve asked as every answer I’ve heard has been wildly differen. I’ve heard nute burn, cal deficiency, And P deficiency. I’m leaning forward nute burn but I don’t know what to think anymore. A little background on the grow to help out. Using ff hydro trio running around 850 ppm. Plants are 6 weeks old . Trainwreck strain. SolarSystem 1100 lighting. Temps from 68-75, rh from 46-55. Grown in Autopots. Auto pot reservoir checked daily and Ph to 5.8~. Medium is 50/50 coco perlite. So now with the issue. Starting as small brown spots on lower fan leaves until consuming the whole leaf. At first it was just one of the 4 plants affected now it’s 3 of the 4. I forgot to mention I’ve been supplementing with full strrenghth Cali mag. These pictures are from last week and it’s gotten considerably worse. 2 of the plants affected are barely growing. Anyway pics below and thanks for looking
Yeah seen that a few times. But not so sure they would have made it this far if that was the case.Do you have a water softener system? I had one, didn’t think about the salt and I ended up with the same results.
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