Hi all, I am looking for advice on switching filters. More like how to not mess up the bacteria and cycle I just got going.
TL;DR: Should I take the fine sponge off of the HOB intake and hopefully it would fit the new sponge filter and continue using that while removing the HOB filter? Or if the old sponge doesn't fit, should I just let the new sponge filter sit in the tank and for how long before removing the HOB?
Currently running a newly cycled 7 gallon rimless aquarium. Planted, scaped, and newly stocked with a nerite and 6 cherry shrimp ( + one shrimplet that slipped into net at LFS as they were bagged up). I am currently using a Tetra Whisper pf10 with coarse sponge in the filter and a finer one on the intake. I also have an air stone running. I would like to consolidate them into a sponge filter (which I just ordered from the shop here) as the top that came with the aquarium does not quite fit as it should with the HOB. I've been putting up with the misalignment since I got the filter a while back but my nerite is getting adventurous and I'm realizing I need that top fitting properly.
I was thinking I could take the fine sponge off the intake and hopefully it would fit the new sponge filter and continue using that while removing the HOB filter. If the old sponge doesn't fit, should I just let the new filter sit in the tank and for how long? Still new to a lot of this and just worried that might crash the cycle if I remove half the sponge media with the old filter. I do have dragon stone, driftwood, mosses and sand substrate (in the front) so there should be still a lot of surface area.
Any thoughts?