Sensi Seed Skunk #1 Auto

2.06 -- 1.5 l of water with nutrients 3.06(day 57) -- +-0.5 l of water 4.06 -- found small brown spots on few leafs. My idea that is calcium deficiency, but some guys told that it probably splash of nutrient. Phosphor and kalium can block calcium and magnesium. So I gave her 1.5 l of clear water. 5.06 -- seems that brown spots did not become larger.