killifish_guy662 Posted May 15, 2021 Share Posted May 15, 2021 I’m on the tail end of doing a fish-less cycle. I’ve been running a canister filter during that time. In the canister is that fine poly-fil, polishing type of media. Since there is no actual fish to gunk it up. Would you replace it as if there were fish gunk in it or leave it until there are actual fish in the tank to gunk it up? It’s been about a month + a week since day one. Trying to figure out a game plan for when the tank is ready for fish. Leave the media in place and reset the maintenance clock to zero after adding fish or go through maintenance like normal when you have an established tank before adding the fish? Link to comment Share on other sites More sharing options...
Schwack Posted May 15, 2021 Share Posted May 15, 2021 Leave it in there! If your tank is cycling, lots of beneficial bacteria will be growing in that filtration media. I wouldn't change that stuff until absolutely necessary. 2 Link to comment Share on other sites More sharing options...
lefty o Posted May 15, 2021 Share Posted May 15, 2021 i wouldnt replace it. if you are doing a partial water change, you can swish it around in a bucket of the tanks water to get out whatever gunk it may have accumulated. 1 Link to comment Share on other sites More sharing options...
DShelton Posted May 15, 2021 Share Posted May 15, 2021 (edited) I would put a sponge on the intake strainer, so that I would only rarely have to open the canister to disturb its media, but definitely do not change the poly-fil. Edited May 15, 2021 by DShelton 1 1 Link to comment Share on other sites More sharing options...
tonyjuliano Posted May 15, 2021 Share Posted May 15, 2021 1 minute ago, DShelton said: I would put a sponge on the intake strainer, so that I would only rarely have to open the canister to disturb its media, but definitely do not change the poly-fil. You betcha! When it comes to filter media, if it ain’t broke, don’t try to fix it. 1 Link to comment Share on other sites More sharing options...
killifish_guy662 Posted May 15, 2021 Author Share Posted May 15, 2021 1 minute ago, DShelton said: I would put a sponge on the intake strainer, so that I would only rarely have to open the canister to disturb its media, but definitely do not change the poly-fil. I have a sponge for the intake as well. I was waiting to attach it to let as much bacteria build up in the canister. Mainly got it to keep the sand from going into the filter once I move my Yoyo’s into the tank. The extra surface area for bacteria is a bonus. 😎 1 Link to comment Share on other sites More sharing options...
lefty o Posted May 15, 2021 Share Posted May 15, 2021 put the sponge on now. this will let that grow bacteria, and it will not inhibit the canister filter growing bacteria. 1 Link to comment Share on other sites More sharing options...
killifish_guy662 Posted May 15, 2021 Author Share Posted May 15, 2021 Just now, lefty o said: put the sponge on now. this will let that grow bacteria, and it will not inhibit the canister filter growing bacteria. That was my plan for this weekend! 😁 Link to comment Share on other sites More sharing options...
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