Autopot with coco possible phosphorus issue

[Waira]

brudda, are you in fabric pots, or plastic? And are you coco savvy? It cannot be treated like true soil, in such pots you must be doing drain-to-waste, feeding weakly each time, never water alone, and with 15-20% run-off each time; this is what keeps the nute salts from building up.... coco has more in common with hydro that true soil! pH needs to be around 6.0,... extra Ca-Mg is called for because of coco's odd CEC properties (it hogs it until fully sated, keeping it from the plant),.... for flushing, so as to not TARFU the coco's CEC, you need to use RO/Di water, with 150ppm of Ca-Mg, plus another 150ppm of nutes, pH to 6.0,... pour through until ppm/pH of run-off is at or near input values,.... coco is a PITA my man! but yiou can grow monsters in it because of it's many positive properties, but you gotta do it right or nuthin' but trouble comes your way,...

now that stank! That sounds like anaerobic rot, making H2S, hydrogen sulfide, and it's toxic as hell to most life forms... I've had a couple house plants do this at the bases,... you need to get air under there, elevate the pots underneath,....

 

[hillbillydeville]

brudda, are you in fabric pots, or plastic? And are you coco savvy? It cannot be treated like true soil, in such pots you must be doing drain-to-waste, feeding weakly each time, never water alone, and with 15-20% run-off each time; this is what keeps the nute salts from building up.... coco has more in common with hydro that true soil! pH needs to be around 6.0,... extra Ca-Mg is called for because of coco's odd CEC properties (it hogs it until fully sated, keeping it from the plant),.... for flushing, so as to not TARFU the coco's CEC, you need to use RO/Di water, with 150ppm of Ca-Mg, plus another 150ppm of nutes, pH to 6.0,... pour through until ppm/pH of run-off is at or near input values,.... coco is a PITA my man! but yiou can grow monsters in it because of it's many positive properties, but you gotta do it right or nuthin' but trouble comes your way,...

now that stank! That sounds like anaerobic rot, making H2S, hydrogen sulfide, and it's toxic as hell to most life forms... I've had a couple house plants do this at the bases,... you need to get air under there, elevate the pots underneath,....

I'm growing in autopots. The plants veg.well, although the ph was high for coco they ran at times 6.7 from what I've read that's a bad zone in coco. This is growing pains for me, the autopots takes watering out of my hands and fits the demands on my time. When flower hit the ph went lower my feeds were at 5.6 my thinking was it would help bring down the ph in the pots. This issues hi fast and hard although the ph was 6.0 So I was st a loss where I screwed up. Now the feeds going in to flower went up in ppm.was at about 950 I use rain water so the ppm in it is very low ph is 6.7 I have seen results with the micro no new bullshit but, damage was done this affected 2outta 3 3rd plant doin g great flower feeds were 2 ml a&b 2 ml terminator 1.5 ml big bud. Cal mag was added directly to tray at 1. Ml twice a day due to it was organic and would clog the res. Gotta lot to learn but this will teach you patience and people like yourself and others on this site are my sole source of help I hope everyone appreciates this as much as I do. Gonna stay after it !