Bruce banner round 3

Did a little lst training on one of the plants. Rotated them a bit. Right corner took some leafs off...feel like they are drooping a bit.i am using a timer on the ventilation system to be on and off and I think it’s causing issues also watered with hi ph water not sure think I need to cal my ph meter....usually my tap Water and usually it’s 8.0 but all of a sudden it’s was 6 with no buffer.