T5s work great. You will be happy with them.
The only difference with a COB light is you don't have to buy bulbs, and you can run less power and heat.
Did you try Speedy Metals?
I've replaced HPS and T5.
I use 5000K COBs 350ma-700ma for vegetative.
You can run very low power and have healthy green ladies.
Or, run more intensity for fast growth. You can really customize and dial things in with COB.
Gavitas and COBs are not comparable.
1.) COBs have a better spread (much more light sources close together)
2.) More efficient. Less heat/watts, more light!
3.) Don't have to replace bulbs.
4.) Better quality/yields.
Realstyles is very knowledgeable on the subject.
I like it. Seems a little overkill though. I like the 50 COBs. With so many COBs going you could run at a lower current/wattage. Or, you could just run it like that and dim it down. I'm not familiar with the Citizen COBs though.
I built a similar sized room with 2250 watts CXB3590 and I'm...
Please clean that up. That looks awful. Show some pride. Ugh.
You're just going to leave the drivers hanging like that? Some are taped. Oh man. Nothing personal. No offense.
I guess you could try some zip ties, and that would be better. They hold good, and they're non-conductive. Peace my brudda.