I am reading into better quality diodes. Look at the spectrum graph.. a huge spike in red compared to epistar. It cost more too.
I will get 3500K with add the cree reds on board. I just dont know if I desire to have the UV and IR ( aka far red ). There is a choice for this, so I will choose as desired. I know HLG Rspecs ( usa company )use 3500k lm301b top bin diodes and osram 660 deep reds. They are highly successful boards. So I am assuming the KB boards with lm301b ( lm301h ) with added cree 660 nm should be close to, or as good. Binning of lm301b ( lm301h ) has been debatable between HLG and Alibaba vendors.
we are not made of cash here so these KB lights are a good option for some. Especially if you live out of the USA.
@bigmikey86 Are you sure that was20 percent higher thc. I think everone would incorporate if you got 20 percent. THC madness lol.
UV does come in several configurations. I believe anyone wanting to use it seriously would go with tubes with uva uvb. Solacure Agromax etc. Those UVA UVB tubes can be dangerous so use with caution.