What’s a good ph for hydro during flowering I know they say between a 5.5 and 6.5 but should I target the 6.0+ side of that range or the 6.0- side
5.8 is the sweet spot for hydro.
You can let it drift from 5.5 to 6.0 but beyond that you’ll be locking out
For flowering you want a lower ph… that’s the range for p and k uptake… 5.8 to 6.3 for veg and 5.3 to 5.8 for flower… 
http://timbergrowlights.com/redwood-ts/ or https://horticulturelightinggroup.com/products/hlg-550?variant=6451953991707 @dbrn32 what’s the better option
If the timber light is available in 3000k or 3500k 90cri I would personally go with that one. But the qb light is a little more efficient and probably easier for most to grow with. More a matter of personal preference, and I prefer the cobs. But will be the other way around for most. I don’t think you would be unhappy either way.
Are the V2 quantum boards just as good as the V1 @dbrn32 https://growerslights.com/collections/horticulture-lighting-group-quantum-board-led-kits/products/horticulture-lighting-group-600h-quantum-board-led-kit?variant=8194693660773
Better actually. Like 6-7% more light per watt. It’s pretty much same design but moved from 561c diodes to 301b. Samsung’s latest and greatest. The boards themselves are also now manufactured by Samsung
Smoked my first bit and it’s awesome very happy with the results thanks all who helped me I will be running Banana kush and blackberry kush in my next cycle they are already 6 weeks old and about to be switched to flower I will be running 2 plants as the space was a little tight for 3 and I feel 2 would make a more workable room for the space I will grab some pics this week of the next run also very happy with the results of the hydroponics rdwc setup I made a few tweeks mostly for my convience not anything to effect the grow