LF used 250w SE radium bulbs

[Aquattro]

Originally Posted by marie

I figured they would be very blue.
As odd as it sounds I need to slow down my coral growth, I am needing to fill my calcium reactor every 4 weeks and with the low ph I'm running in the reactor, the media turns to mush fairly quickly so the bottom 3" is wasted.

Nobody has an old radium laying around gathering dust?

If you want to upgrade, I have a 400w lying around I also originally went with Radiums to slow down growth, which wasn't entirely successful, but I did love the color.