I had an EC spike in the rootzone which caused a slight pH issue I believe possibly causing uptake of Ca issue.
EC was going in at 0.8 and coming out at 1.4 so I knew something was going on.
it hasn’t really progressed since I stopped it only the existing leaves that had the issue are still there.
i put it down to a little too much MKP at the wrong time Along with possibly the brick coco I used and didn’t bother to buffer.
I was using between 0.2-0.4 EC of Calmag pretty much the whole way through but stopped until I rectified the issue which stopped progressing after I stopped Calmag.
next grow i won’t be adding Calmag and see how they fair just from the Ca and Mg in the base A/B.
Bit more choppy chop and a lighting upgrade for the Blue Gelato 41’s as they were out growing the T5HO 24w so I’ve fudged my 200w CFL under the propagation shelf
This should only be for small amount of time while the scrog is finishing off.