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600v HPS

Have U consider to swich to LED.
I will link U the guy who did tested the 1200W HPS nad 1200W of LED (CREE CXB).
U will see the results.

Thanks☺ I heard a lot of great things about Cree leds. I really want to try them as well. Anfortiently they are so expensive in Israel. It's a little bit above my budget.😕 It can definitely help me a lot temperature wise at summer thou.