Best light for a 2x4 tent

bwahah i forgot the QBs heat dissipation.. simply point a fan at top... increase efficiency (actually hit what is stated) and longevity improves too -- more likely to take 60k hours to get to 80% of original intensity of the diode.

Those are nice lights -- basically max you want to give over 18 hours and still decent for bloom. 1-1.5g per watt easily. heat dissipation is my concern with those quantum boards. also, get a more even light distribution with strips/modules of those lm301b's mixed with FR and other goodies just like that one. from an old ? Look into something with samsung LM301B diodes (the -H type is just more expensive for same exact part off same exact product line) Most efficient diode out there... run at .7A-1.4A-2.1A and blow everything out of the water. If it has some red diodes, even better.. doesn't need many.. like 96:4 or 100:4 type ratio. Spectrum and Efficacy micromoles per second per joule... 1J heat comes from 1W. So, the higher this value is, the more efficient the light is. More photons vs. heat (1joule/s = 1watt/s) umol/J umol/s is how many photons your light produces realtive to heat, or wasted watts. if the spectrum is tailored for photosynthesis, this is all that is important after that. 3000k temp, 80 cri for efficiency reasons. running these at 1.4A puts you around 2.7-2.8 efficacy. a high end hps is around 1.7-2.1umol/J, if not mistaken. Those "zeus" lights migro liked so much was only ~2.5 efficacy, to give some persepctive. The samsungs are another ~10% efficient beyond the zeus lights 2.5. This value's difference will tell you the cost difference of 2 lights using the same watts. If 25% more effcient, you produce 25% more umol/s using the same watts. You could dial it back to 80% of watts and it would match the umol/s produced (.8 * 1.25 = 1.00 ---- 1.00/1.25 = .8... easy math... save money! provide better light!)

50% off on amazon right now too it looks like.

https://www.amazon.com/Spider-Farmer-Commercial-Greenhouse-Hydroponic/dp/B07TVD1Y3K enough said.. Happy growing! 👊