I have a question about powerheads on a 55 g Hap tank I'm debating on the Aquaclear 70 I like it due to I can add a quick filter to polish the water thing I don't like is I'm told the suction cups let it rattle and they fall. There is the MaxiJet that can be used with the Sure Grip magnetic holder Im told works well and I'd like to use that. Can someone give me some advice on how to either use a magnetic style bracket on the Aquaclear or how to add polishing filter to maxi jet Thank You