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And if anyone cares ph and to much moisture was why I failed rockwool so bad

It just says in general. It looks like a serious book to

Thanks dude, I had a serious problem with rockwool at first now I got one that's doing great at 5.8ish but then I get this big grow Manuel telling its 7. I'm prob just gonna stick to 5.8 until flowering. Good luck with your grow dude

I was under the impression that 5.8 to 5.5 was perfect ph for my coco a nd rockwool grown plants but I got this giant book called The Cannabis Grow Bible 3rd edition and it says they prefer a ph of 7. I was also under impression that 7.5 was way to high for ph. This is my first grow and my...