Hi everyone i bought a sunsun hw-302 canister filter for my aquarium a month ago so wanted to take a poll on how much time should i run it before this i used to have internal power filter which i used to run from morning/evening 6:00-10:00 and i am following the same schedule with my canister and airstone. But after doing some research and some people pointing out to me it has come to my notice that canister filter should be run all the time except at time of doing water changes and feeding time. But one more thing coming in the way of running canister filter all the time is water flow which will stress out the fish for which i think i can use the spraybar supplied by the manufacturer. So please provide details like Which type of filter you use? Do you also use airstone? And for how many hours do you keep them on & why? For the benefit of new canister users like me and someone who will be shifting to canister or thinking of buying one please cast your vote.