yeah I've seen them. some have pretty high output. only thing is that they have pretty low Kelving. maybe there are some 6500K bulbs
https://www.1000bulbs.com/category/over-2000-lumens-plug-n-play-t8-led-tubes/
yeah I've seen them. some have pretty high output. only thing is that they have pretty low Kelving. maybe there are some 6500K bulbsI'm still using two T5 high output lamps to light my 45gal tall tank. I noticed the contractors at my hospital are using LED tube lamps in a shop fixture. They seem pretty bright. Anyone try these out for planted tank lighting?