Re. pH dropping - root rot or other organic decay will drop pH. If it's not that, assume your EC is too high
educe your PPM 10% at a time until you reach a point where PPM is stable or dropping and pH is stable or rising.
I'm doing a grow of 4 GG autos and I just went through a pH dropping issue. It was resolved by dropping PPM - just like the charts recommend.
When I check my plants, I summarize them with the three letter code - Water (static or falling), EC (static, rising, falling), and pH (static, rising, falling) so you end up with a shorthand that helps you figure out what's going on in the res.
I
This is "Son of Wonder Chart" and this version assumes that water is being taken up.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.