Yes, I did read that thread. I said I was gonna "ease down" the use of epsom salts. By that I literally meant "stop using" I should just have said "stop using" to begin with, sorry.

Old leaves are old news, gonna remember that one dutch pimp

ok, so I should pH adjust my water to about 6.7, then add ferts?

I'm not and have never used any kind of spray on my plants, be it nutes or just plain water. Maybe I've watered too much after all.

Not really. And I've never had, nor heard of, actual mag deficiency in pre-mixed soils, and using commercial nutrients. But it was a lazy mans diagnosis for quite a while. Growing outdoors, I can see where there could be a magnesium def.
Lockout can be caused from too high ph, too low ph, heat stress, overwatering, too cold, overnute, high humidity, calling it hurtful names...but usually it's from letting the soil parameters get out of whack.
It is well known, atleast around here that BioBizz BioGrow does not contain magnesium. If it does, it is not enough to avoid a magnesium deficiency (my soil contains very little magnesium). So I need to add epsom salts during a grow, however I've probably used too much of it this time.
Elisabeth65 Reviewed by Elisabeth65 on . several small signs of something wrong, pics provided 'ello everybody! This is not really an urgent "help me"-post, I just have some questions due to small irregularities that I've observed on my plants recently. As the grow-geek I am, I like to know as much as possible about how my plants are doing. Anyways, thanks for reading :stoned: This is a 5 week old NL plant. I've noticed some strange spots on the plant, and been wondering what they could be. I've had problems keeping the RH up, due to high ventilation requirements (I grow in a very Rating: 5