Does this help any more?normal lights would help but rust spots are Ca deficiency. could be not enough Ca or nute lockout of Ca by other nutes or pH or EC .
more info needed.
Okay. I changed my res and re mixed a fresh nutrient solution just in case i mixed it wrong last time. Fingers crossedthe new growth looks fine. sometimes those first sets of leaves look really bad but there is usually nothing wrong with the plant.
i wouldn't worry about it. unless that new growth starts to show rust spots.
Okay. I changed my res and re mixed a fresh nutrient solution just in case i mixed it wrong last time. Fingers crossed