I am a first time grower and the tips of my leaves are turning brown and eventually the whole leaf is dying off. The strain is Dark Angel(feminized), growing in pots using Biosol potting soil 1.2-0.7-0.6 with about 25% worm castings mixed in. Watering with pH corrected water (7). Plants are about a month old and I fear I might have added too much worm castings? Can someone advise please?
Your Ph is too high at 7, try to get it down to 6.5 and you should be good.
Ok, I will try that, thank you.