So I’m still having issues with coco in Autopots. As I may have mentioned, Ive had plans on switching my entire grow room over to Autopots and initially I thought coco was the best medium for this. We are talking both flower tents and my permanent mother tent.
As I’ve mentioned earlier I have a test plant going to see how it would go, well the test plant is running into problems after seven weeks of veg. Everything has been mostly fine with the exception of needing more calcium … anytime I experimented by removing the cal mag she would start getting spotty, but after adding it back all was well again…… until recently.
I cannot figure out what the problem is. She’s yellowing significantly and showing calcium deficiencies despite numerous adjustments and checks and balances as well as now always using full strength cal mag.
Originally I had her at around 1.2-1.3 EC PH 5.9-6.0 in the res.
Feeding her with RO water, full strength cal mag, and canna coco A &B nutes.
PH in the autopot trays themselves are also spot on at 5.9/6.0
I thought maybe she just wasn’t getting enough feed overall as she’s getting large, so I upped the base canna nutes up to 1.5 EC. She still is yellowed out and shows calcium deficiencies.
So I thought we’ll maybe it’s something with the canna A/B nutes, so I pulled the res, cleaned it out with H202 and dried and rinsed thoroughly. Mixed up the recommended dose of Maxigrow … 1 teaspoon/ 5 grams per gal, with full strength cal mag which comes out to right at 2.0 EC…… after three days nothing changed at all. She literally did not react one bit.
Alright, so at this point it’s clearly lockout of some kind right? Either that or maybe the coco needs “rebufferrd” as I’ve heard some suggest.
So I pulled the plant, flushed her with 1 gallon of plain RO water first. Water going in was 5.8 PH, water coming out was 6.4 PH! Ok! Now we are getting somewhere, so clearly the ph inside the pot itself is climbing for some reason…. But i have no idea what to do about it. So I then flushed with 2 more gallons of a strong cal mag solution in an attempt to rebuffer the coco. 450ppm, 5.8 ph going in, runoff coming out was still 6.4
I’m not going to waste ten gallons of water flushing a single plant every month to keep things in check especially when many times I have 30 plants or so going.
So today I decided to pull her and kill her and start over with new clones. Here she is waiting for the chop.
I’m not sure what’s up but I couldn’t do it lol
I got all sentimental lmao.
Despite the yellowing, I’ve trained her into a perfect bush and chopping her and trashing her just felt like such a waste. So I threw her outside in a large pot of soil. I’m sure she will struggle with the shock, she has no hardening off to the sun, her rootball is in coco while the container is filled with amended soil… but at least she’s got a chance now haha. Go big momma go!
We will see. Here she is outdoors at the end of my container garden
Here’s her rootball coming out of the autopot. Looks nice and healthy…. No root rot that I can see. I have no clue what the hell the issue was as far as WHY the root zone PH is rising inside the pot when ph in the tray and the res is normal … nor what to do about it. Any suggestions??