hey would you recommend a eheim classic canister filter for my 55 gal. right now im using an aqua tech 30-60gal filter and a whisper power filter for 40 gallons.

I'm using an Aquaclear 110/500 and an AquaTech 30-60 on my 55 gallon with one Oscar and a Silver Dollar in it. I do (2) waterchanges per week and take out 35 gallons each time. Works perfectly.

Assuming that the filter in question is rated for your tank, of course I would recommend this filter. I am a great fan of Eheim. They really are the Rolls-Royce of aquarium filtration. I have had four Eheim canister filters and I cannot fault them, they are the best of the best.

ok thanx guys!! ya this one is rated for up to 65gallons so its perfect for an Oscar since its a little over filtered

Be aware that the ratings on filters usually refer to tanks of normal fish like community fish. Oscars are messy fish and need extra filtration. I would go for a filter with a bigger rating or keep one of your existing filters running on the tank with the eheim. Remember you cant overfilter

true that! ya im looking into a 75 gallon filter for my 55