ok..maybe you guys can help me out..i have regent aquatech 200 hang on canister on my 30 gal. community (1 6in severum, 3 silver dollars & 4 clown loaches ;D) my question is are the magnum 250 hot canister media and accessories interchangeable with mine??? i havent seen them side by side these two filters but they look identicle..PLEASE any info would help...THANKS 