Galaxy bulb selection

[CheckitOut]

I have two galaxy dimmable ballasts and have been running two 400w radium's on them. I like the way they look but growth is so so. Well it's time to change out bulbs and wanted some suggested bulbs for replacement. Pleae help me out. Thanks.

 

[tkeracer619]

I would look at something else causing slow growth if your running two 400w radiums on galaxy ballasts above a 100g tank.

 

[CheckitOut]

All of my levels are in check. So my only guess would be the 20k bulbs.

 

[sirreal63]

What type of reflectors and how deep is tank?

 

[tkeracer619]

From a 2008 post. I'm assuming good reflectors but even without good reflectors SPS should grow anywhere in the tank.

The dimensions for the 105 are L 48.5 x W 18.5 x H 29.