powerheads ?

[intarsiabox]

I used 1 Koralia 2 in my 25g nano (plus HOB skimmer) and there was plenty of flow with no algae or cyano growth. I have three of them in my 90g that I set up this summer and so far so good. I got all three from a fellow canreefer for a really good price. I would love a vortech but just can't justify the price if what I have is already working well for me.