My girls are 5 1/2 weeks into flower. I have cactus cooler and blue dream inside my grow tent. I am running 2025 Spider Farmer G5000​ LED lights with UV30 and IR16 supplemental. All per manufacturer’s instructions with the exception of distance to flower. Manual calls for 16†and my tallest is closer to 4†as the stretch on one of the cactus coolers was more than expected. I started to see some brown spots on the tallest cactus cooler last week and thought it was calcium deficiency. I started watering with Calimag this week. The other cactus cooler is deveoping some yellow around the top leaves. Attached are pics from before adding calcium deficiency mag and after. I’m also using Fox Farm soils and Nutrients. Is this just normal protocol as flowers get more close to harvest. Any help is appreciated