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I've probably grown longer than you've been on this earth.

You need a visit with Dr Bruce bugbee me thinks. Samsungs are indeed the best middle ground. And most of those advertisements don't say that spider/mars/vipar all use epistar and other lower grade diodes for everything except white. Only the white are Samsung on them.

Show me better. Surely you can. https://www.blackdogled.com/products/phytomax2-1000

Black dogs are the best on the market. But who's spending that kind of scrilla.

Im not supposed to share my findings with photone for Android yet. It's still in beta friend. The lux meter does a fine job of showing that the sf can't even overload my meter. The HLG can.

Horticulture lighting group is the most photosynthetic photons you can get per dollar. Just built two qb 288 rspecs on heat sink (from them) with an HLG-240H-C2100A from TRC for about $260 total. Blows my $300 spider farmer out the water. Spider farmer was pulling a couple more watts there too.

You will need about 500 actual running watts to flower a 4x4 well. Both my 2x4 use 250. One sf2000 the other a diy HLG. The HLG of course produces much more photosynthetic light than the spider farmer. Cheaper too, diy. I can max out my lux meter at 1/2 inch away from the sf. Then HLG hits it...

Here are some vpd charts using leaf temperature subtracted from room temperature to tell you which one to use to dial in your grow. I run my dehumidifier in the lung room. For 3 tents.