Week 2 veg.. Topped her yesterday. Looks like I've got a small calcium deficiency but I caught onto it and remedied before it got bad. I use RO water with calmag and my ph sits between 5.8 and 6.2. Started out using GH CaliMagic but the guys at my hydro store told me the GH stuff can be finicky so I just switched over to botanicare calmag