Lighting required for Cheato?

[RuGlu6]

Originally Posted by banditpowdercoat

I have to change my CF bulb. I got some new ones, and they are considerably blue'r than the last bulbs. They say 6500K, so my other ones must be 5000k? And, I noticed my CHeato has almost disappeared Started to decline about the time swapped bulbs. Coincidence?

I got 6500k CF Phillips from Home Depot and cheato does not grow at all.
Incandescent "Grow Light" is very hot so i don't want it.

I also tried that super bright one with reflector recommended on mevlevs reef page and cheato or any other algae did not grow ether.

I wonder is there anything else?