First indoor grow with LED lights

In a small bachelor apartment, I have set up one tent for Veg and one to Flower . They both use HEPA air intakes with quite running fans. Both tents use Ac infinity inline fans to vent outside though backdraft dampers. Using local mountain water, ph to 7.0 , I have germinated seeds with paper towel inside small paper cups Placed on a high shelf inside a dark closet, the average temp is 75f and the RH is at 45%