Hey gang. I recently upsized one of my pleco breeding tanks from a 40 gal breeder to a 75 (actually 78.8) gal. I have an AC 110 on the tank, and it is not getting the job done. I thought of adding an AC 70 to it, but I should prolly go with a canister according to what I have read. I know nothing about them (yes, I AM the dummy !) So I am looking for advice as to which model might be best for me. Please keep in mind that I am as mechanically inclined as a stone, so ease of use is priority 1 for me. Thanx for any advice.