Wedding Cake Hydro

Continue to remove large fan leaves not receiving light. Noticed a possible calcium deficiency. My water supply is not RO but does come in at 50ppm, so I will allow more pH drift 6.0-6.4. 3 days into the week and that was a calcium and magnesium deficiency. And it went further than it should have. My bad. Increased the MagnifiCal to match the other nuits. Symptoms stopped in a couple days but the past 7 days have seen slow/stalled growth because of it. I plan on learning this strain inside and out. So I will adjust feeding next time to avoid this. Mid week: Well fuck! I just checked my reservoir and temperature was 9C!!! Immediately installed water heater to heat to 18C.