I have no means to hijack the thread, but since OP is on a good road (good job mate) and using GH nutrients, I was wondering if anyone could help me as well.
I noticed that a few people recommend much higher levels of nutrients with GH. I've been having huge problems with my grow, mainly because I was using tap water that had too much calcium that completely locked out the rest, I alo grow with a DWC system, 5 gal bucket.
Yesterday I filled up my reservoir with R/O water for the first time, added about 250-300 ppms of cal/mag (I have a serious cal/mag deficiency that's been going of for weeks) and about 200 ppms worth of GH 3 part nutes. Anyone recommend adding enough nutes to up the ppms to 700 in my case? Growth hasn't seemed to improve, although it could be too soon to tell.
Cheers.