Greenhouse seeds

Leaves looked a bit pale and had some white blotches. So fed the first time with TA. Soil was prefertilized with 300-115-415 mix, so maybe i should have just used the TA Grow and Fulvic? I think i will do this next. And maybe add the micro onto it as well. Put lamp on 50% i dont see too much stretch from these plants. 6/9/24 fastbuds received 3 liters or water and green house seeds 2 liters. Water ph 7. Run off ph 6.5. Last pic after watering. Dialed lamp down to 37% adjusted light period to 18 hrs a day.