RyanMcLaughlin;1389755; said:
Saltwater. Not for a reef but just oxygen exchange and water circulation.
You'd really be better off with koralias then.
Like I said, a maxijet feels stronger because it's coming out in a small stream, but koralias are really better for overall turnover. My husband switched from maxijets to koralias on his 90g FOWLR and ended up with a heck of a lot more turnover and more oxygen in his water even though the flow is much more gentle. His fish also seemed to like them better (feels more natural I guess?)
BTW, how big a tank are we talking? Not sure if I missed it or you didn't say.
Maxijets aren't too good for small tanks since you tend to end up with sand getting blown everywhere (hard to direct hard the hard flow where it's not blowing sand around SOMEWHERE in the tank). The other problem with maxijets is that they tend to get clogged or stopped up, especially if you have any fish that might throw sand into the intake strainer or if they fall off the side of the tank and suck a bunch of sand in, or if you get algae on them, etc. (I speak from experience), very very BAD problem in a SW tank since SW doesn't hold as much oxygen as FW in the first place. This isn't as big an issue in a large tank where you can keep them at the top of the tank away from the sand, but it will still happen periodically.
For big tanks maxijets just don't flow enough (the 1200 is only 295gph) so you end up needing several.
The powersweeps, yeah, nothing good to say about them. I haven't personally used them, but I know several people that have and several fish stores that do. Rarely see them running unless someone cleans them out OFTEN and they usually still stop. Would be a waste of money IMO.