incandescent bulbs

[greenmachine]

why not use them? 900+ lumens,,very low and or red color temperature that does not shift like the spirals..just a thought.

[SantaMonica]

Too few lumens for the amount of heat and electricty.

[greenmachine]

ok but think of the color they emit.....must be closer to what algae like,,,no?

[kotlec]

If color is your goal , then 660nM leds are far superior. Incandescent has not a single advantage except price to begin.

[kerry]

They get hot and burn your algae. If you set them back further you dont grow algae. There is no good trade off with them for scrubber use from what I have tried in a couple experiments.