I have been growing two SSH photo’s and 1 GG4 Auto in a 3x3 tent. I have ventilation and carbon filter. The temp is 70-76* F, Humity is 55-60%. Was hoping someone would be able to provide some insite on what these yellow spots were that have been forming on the leaves, They go all the way through to the underside on the larger spots.
Any help would be greatly appriciated,