Root rot or over feeding?

Ok guys week 3 flower I was at 850ppms tested runoff and it was 1000ppm so I flushed and lowered ppms down to 650 tested run off next day 850ppm 5.6 ph....lowered again down to 550 after another heavy heavy flush ppm run off was 565 just to be sure I watered again 6 hrs later and my ppms runoff jumped to 650-700 ph 5.6....my ph going in is rock steady 6.0-6.1.... last time I ran into this I had root rot I really don’t wana deal with root rot at week 3 on a 10 week strain... what do you thing is going on why are my girls releasing ppms into the coco? I’m in 2x 5gal fabric pots and 2x 5 gal hard pots all of them has the same runoff...I water once per day so theirs no way I’m over watering iv watered coco 5x a day in a rooted pot with no issues...I run 4ml per gal 34% undiluted h2o2 that should keep root rot at bay I thought? Iv been running that h2o2 from the day they sprouted... strain is blue dream a know heavy feeder my temps are 86f rh 45-50% I did notice brown spots and yellowing leafs on top of plants indicating cal mag deficiency but I ppm my ro water to 250ppms with cal mag them the rest is coco tek a and b bloom are they starving or is the low ph keeping them from uptake in the cal mag?

I give them 6 gal of feed water each to act as a flush every feed so their shouldn’t be any salt build up... I also run drip clean at .4ml per gal

Can you please post pictures? Thanks

Hear

They are so pretty! But it sounds like something is going wrong... I Try to be a simple grower just soil and water and top with soil sometimes I go crazy and add bone meal or silica but it seems like every time I add nutrients something funny happens...yellowing red stems, etc... I know that stuff builds up in the soil. I do use Great White or Microbe life plus C to boost the microbial activity. I think when you grow in coco you are supposed to water a few times per day as to not let the coco dry out and with nutrients each time. Its about finding that correct amount of nutrients, microbial life and water.

The hydrogen peroxide kills all the microbial life, but my plants loved that (at a rate of 1/3 peroxide with 2/3 water) sometimes(when there is fungus gnats). Maybe thats whats happening if you are doing that everyday, I didn't see any mycorrhizae type stuff in your regime, I think all plants need them even in coco or hydro.

I am sure that someone with experience growing in coco will chime in. I know there are some pros that grow in coco on here, it Sunday, California is burning, hurricanes are going crazy and we are still dealing with COVID...

Did you ever find out what the problem was?

Looks like a magnesium deficiency from the "window paning" effect the leaves are having. I usually shoot them with calmag when they show that symptom and it stops dead in its tracks. PH could've swung out of range one feeding or something? I wouldn't stress unless its a reoccurring issue. Pluck the sick/damaged leaves and let them rip.

Idk what the issue was but it seems to have gotten a little worse then stopped. Thank you guys

I did a preventative 3% h2o2 soak then flushed them and a shit ton of slim came out of the pots they started eating again the next day no more ph swings.... one week later they started showing signs of cal mag issues that never seemed to get better even after bumping up cal mag to 350ppms..... well fast for forward 2 more weeks I was in week six flower and all my pistols have shrivels up and I was ready to chop them and toss them to start over but let them go a few more days to see what would happen....at week 7 they started throwing white hairs again so I let them go to 11 weeks and chopped them.....glad I did becuase my biggest plant pulled 18.5 oz jarred up ..... that 4x4 dry tent was just the one plant btw

I'm glad it worked out and thank you for updating the thread and not just letting it go ghost. Next run you might want to better monitor your runoffs PH/PPM and try to keep your feed PH stable so your grow is more predictable. Cheers.

I 100% agree with you lol this forum has helped me out tremendously thx for all the help guys