And this tooIf your using ro water you should be adding cal/mag to it otherwise you'll end up with a def. I'm on my phone so I can't see the pics good enough but check that out.
I agree.Definitely get a ph pen, you can get them for cheap. Checking PPM would help as well. They have a little nut burn for sure, you can tell by the tips. I sometimes run mine high and the tips will burn, but yours is further into the leaf. Flush them GOOD, then start with half nutrients. You might want to lower them after that. They are looking good other than that
Thats true, better to have it and not need it than need it and not have it. I have some just incase but rarely if ever need to use it. I use AN sensi with ro water and have never needed to use cal/mag even AN say you wont need it even when using RO water with sensi. Also think certain strains are more prone to cal/mag def, ive been using hesi for a short while in my coco grows and had mag def once with one particular strain when using ro water the rest are fine.That's the thing with cal mag though, you never need it till you need it,lol. I always add during the stretch regardless, not a lot but it's in there and the issues don't come. A little preventative feeding if you will,lol.