I am currently using the aquaray grobeam 1000 on a 180 gallon planted they are amazing and the growth is insane!! they work excellent i was hesitant myself to put out the $1500 for 4 units and a controller but it was worth it!! check out my pic and see my setup. I also use Panorama freshwater leds as a secondary lighting system but the grobeams are fine without it. they are dim by contrast
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