I asked my local grow store why they only sell hlg. Their response was the Chinese companies don't take returns (from the store). If you buy an hlg and have a problem, you can return it to the store for refund. Same situation with the ph pens. They only sell blue labs.
I buy American whenever possible. I don't like the idea of sending my money to a country that hates us. Did you even read the article I posted about 301b vs 301h? They aren't the same 301h and was 5% more efficient probably due to better sorting. sf doesn't use samsung deep red
Mate you have no idea. You grow with a 70w burple and get 2.5 Oz.
The fact you are here blabbing on about how good sf is compared to HLG or other quality lights is just showing how gullible an inexperienced you actually are.
Your looking real stupid at the moment. I would suggest ya tuck ya tail between ya legs and give up Aaron.