Auto Ultimate - Two Plant Grow

They’re growing in a mix of coco coir and some depleted soil from a previous run. Only added nutes are ewc that were amended into the soil prior to planting. Trying hard to keep the root zone moist without overwatering. I’m finding that difficult with a new plant in such a large pot. Still, growth seems adequate so far. Using r/o water and two 200w phytomax II’s. No thermometer, hygrometer, ph testers or any other testing equipment. Fingers crossed!