I don't know if I OD'd them on Cal-Mag. That is my guess, and that's why I am asking for help. From what I've read it seems to be a potassium deficiency compounded by over-fert. Can excess Mg cause this? Or, was the soil too hot to begin with? The Power Flower ingredients are Sedge Peat, Sphagnum Peat, Perlite, Bone Meal, Feather Meal, Bat Guano, Seabird Guano, Rock Phosphate w/humates, Lime and Fossilized Kelp (Montmorillonite).

I was able to find some pH test strips for spas late last night. My pH drops read about 6.5 on a scale of 0.5pH increments. The test strips measured 6.2 on a scale of 0.2ph increments. That's about perfect, right?

I don't think I flushed them enough, and I added Cal-Mag to the first flush water too. I'm going to flush again with straight water and do 6 gallons each. What do you think? Raising the light sounds like a good idea as well.