Have the Beamswork Pent 0.5 6500ks on my 20L and 55G, grow Vals, crypts, and Anubias no problem. I wired them so they work off a Fluval ramp up/down digital timer each. if you want to go higher light just add a second light. I think just one of these lights on my 20L can probably grow high light plants as well.
Another Beamswork fan.
FSPEC 48" was about $75, I think. Plenty of light for "easy" plants in my 100ga. I have it on a timer for the shorter "high" 8 hr photo period & another Chinese cheapie (with added reds) for the ramp up/down times on another timer. Probably have less than $125 in the lights, total.
Thanks for this discussion. I'm an LED newbie also looking for lighting for a new 48" 75g tank. I currently have a Beamswork DA 90 500 (lumens) on my 55, and it seems to provide decent growth for my low tech low-to-moderate light plants. The 2 48" Beamswork models I've found on Amazon are rated at 5200 lumens, which is barely more than what's on my 36" 55g tank. Would I need two of the 48" lights to provide comparable lighting for a 75g tank?
Below are the specs for the two different lights. Hopefully someone can help me to interpret these specs so I know which would be better for plant growth, and provide a natural look. I'm guessing that would be the first one with the red & green in addition to the white & actinic--is that right?
Beamswork DA FSPEC LED Aquarium Light Pent Freshwater 0.50W (120cm - 48")
LEDs: 120x 0.50W
Config: 86x 10000K, 16x Actinic 460nm, 9x Red 620nm, 9x Green 520nm
Timer Ready, 2 Mode Day / Night
Beamswork DA 6500K 0.50W Series LED Pent Aquarium Light Freshwater Plant Discus
LEDs: 120x 0.50 watt
Config: 104x 6500K, 16x Actinic
2 Modes: All on / 16x only