So I usually mix my own soil...this time around I decided to be lazy and try a premade supersoil made specifically for autoflowers..i mixed this garbage exactly as directed on their website with roots organic soil (their preferred soil):
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HOW TO USE
Super Soil Technique:
1. Add 1lb of Nature's Living Soil concentrate for every 1.5 gallons of organic potting soil to make a ready to use Super Soil (about 1/3 of a 5 gallon container)
2. Fill a container 1/3 full with the super soil from step 1 and 2/3 with organic potting soil.
3. Plant and water from seed to harvest
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I use a charcoal kde filter to remove chlorine and chloramine from my water... my ppm is at 250 and ph 6.5 - 6.8 (not that it should really matter)
everything was going along nicely until the plants hit the ss layer and the tip burn started... another week or so later, I started to see calcium deficiencies.. then after a couple more weeks phosphorus deficiencies...To be fair this was happening with a sour kush plant that is known to be a calmag hog... but this doesnt explain the lack of P in their mix. The soil ph was never out of range and the runoff ppm after a month was extremely low @ around 700 ppm. ive never had issues with supersoil mixes until I used this stuff. I contacted the company and they were cool about it and offered to give me a different batch or give me a refund. It seems as thought their quality control is an issue or their instructions are wrong, I havent decided yet.. I think the stuff needs more time to break down and the smell that this stuff has kind of confirms my suspicion...I guess its possible they gave me a bag that hadn't sat long enough possibly. None of my super soil mixes smell terrible after they have cooked and are ready for use... this seems to indicate that the components have yet to break down and this seems evident by the tip burn. Just a heads up.. if you use this stuff and plan on growing a heavy feeding auto, dont buy the auto flower mix...but the regular mix... I ended up culling that sour kush plant it was so far gone with P deficiency.. . I may have just gotten a bad batch and the company was cool about refunding my money... Just thought you may want to know what youre getting into.. or if anyone has had the opposite experience with the stuff, feel free to leave a comment. What I experienced, boils down to a lack of amendments in the autoflower soil NLS produces.. and the amendments are not properly processed or cooked and can and will cause burn. I cant speak on their standard mix, I havent used it...
Cheers!