Can anyone tell me what this is?
View attachment 1661150
Looked it up on a chart and it looks like calcium defeciency to me, but I noticed it 2 days ago and I added some calmag to the reservoir (10mg to a 4 gallon res) and its still getting worse.
Edit - I looked up pics and yeah, its definitely calcium I think. I read the directions on my calmag bottle and it says up to 5ml per gallon for hydro during bloom, and this plant (Critical+) is in early flower. So I added another 10ml. If it doesn't turn around in a few days I'll do a water swap in that bucket.