ok so i have 20 clones and they are about 2 weeks old alot of the leaves are getting little brownish dots, what can this be? i am using fox farm ocean forest under 2 t5, 24hours, i havent started any nutes yet.. please help
Mine looked like that a few weeks ago, ended up being the early stages of a magnesium deficiency. Water with 1/2 tsp of Epson Salt (Magnesium Sulfate) and see if that helps.