my tank is an AGA 54 gal. corner unit I currently run 2 hagen 304 powerheads , been looking at the Tunze powerheads for a while now , but the 6000 series seems to be for 200 gal. and up. Yet I see smaller tanks with these powerheads . Am I missing something here , do they make smaller ones ? I keep thinking if I bought one it would blow everything over in my tank and cause a sand storm . Any experience with these would be appreciated . They are to expensive to just go for it .