Where's the cheapest place to get a vortech mp40 powerhead? I also need new bulbs.. I have a aquaspacelight with 3 halides the 2 sides are white (I think 10,000k they are the whitest right?) and the middle is (15,000k very blue). Some of my SPS are not coloring up as much as I'd like and I think its because of subpar flow + algae on the sand bed (only 2 korilias in a 75g - hence the vortech) and my bulbs are too white.
Advice?
Advice?



