This is my first organic grow and the soil I went with is coast of maine pro mix. From what I read, with organic soils there is no need for nutes or adjust ph. I'm also using ro water which as we all know, strips calcium and magnesium from the water. I have two girls, one pineapple express and one blue dream about 5 wks old. They were doing great up until about a wk ago or so. Now they seems to be having some ph problems as well as what I think calmag would resolve. So I'm thinking maybe I should go ahead and adjust my ph from now on and add some calmag. But would I go ahead and adjust to 6.5 or since I'm using organic soil should I offset it a little? Same with calmag. Should I use less? Why am I having these issues? With water only organic soil, I don't feel I should have to add anything but water. I'm really trying to steer clear of chemicals because I want a totally organic harvest. Is there any organic ways around adjusting ph and adding calcium and magnesium? Should I just use tap water? I'm lost here
Bro I am having the same devastating problems with coast of Maine growers mix right now.
there soil is dense and easy to over water I meant to put another 20 percent perlite in and am laying the price now.
there is 20 % coco which depending on the quality could easily cause ca and mag problems using ro.
whixh isone of the mistakes I made.
the growers mix I got is also extremely alkaline.
evem aftermy plants been in a 5 gal for 3 weekswith ph in at 6.3-6.7 I got my first run off check at 7.4I dropped my waterton5.9 k over the next few watering to 5.9 still to get run off ph above 7.
Im convinced this started locking out ca and mag and is now
Locking out moreZ
I’ll attach a slurry test I just did of roots organic fresh orginal soil compared to a soil slurry test from my 3 week going containers of coast of Maine.
water for slurry test 6.4
Growers mix 7.2-7.3 roots 6.6-6.7
i called
Coast of Maine initially to find out how much coir was in the mix when I started seeing my mag issues and while on the phone asked if they limed there soil. The rep said they used to but recently stopped because of high ph.
thanks coast lf
I’ll never buy coast of Maine mix again.
now When I would normally be flipping for a quarter pound I’m hoping things green up to clone and hit the restart button with more suitable soil or possibly just go straight to coco and have more control.
really dishearteningZ