Just a thought, you may want to put more row rocks into your cups, around the base of your plants. Fill those cups up as much as you can because humidity is seeping up through those net cups. Maybe your lower leaves are yellowing because they are close to the humidity near the grow rocks. Also, maybe its time to start giving regular doses of nutes, maybe theyre about to go vegative stage and are now looking for more nutes. Just my guesses. And if you have those long fluorescent lights i would suggest keeping them very close, like an inch or 2 away from the canopies.
InspectahEX Reviewed by InspectahEX on . First Indoor Grow - Aeroponics/T5 Fluorescents Howdy all, My buddy is new to indoor gardening and this is his first attempt at hydroponics. The Brick around town is beginning to get on our nerves and we figured growing our own would remedy that. Budget is tight, so everything is non-prefabricated except for the lighting fixture. Frame is all 1x4 pine $30 Tubs are both rubbermaid I believe. $20 Reservoir is "plastic tub" from Lowes 30 Gal $15 PVC and nozzles from Ace Rating: 5