Hi
Sound like you’ve just set up a new tank.
Just have a question or two before going any further as to your query about filter / tank maintenances.
You mentioned that you’ve cycled the tank and filter, may I ask how you have done this and how long has your new tank been up and running?
This question is not intended to be pertinent as it’s fairly important to know firsthand if the tank is actually cycled first before going onto the next step/s.
A lot of newcomers to the hobby assume the following or perhaps after hearing advice from dubious LFS staff saying it’s just a case of setting up the tank the way you like it, then adding a bottle of whatever LFS stock or what came with the tank if was brand new (these are usually useless and a waste of money with a few exceptions to certain product/brands) and then leave tank running for a few days and hey presto “tank is cycled!”
Unfortunately it’s not quite as simple as that really.
Once we know if and how tank is actually fully cycled we then can continue with tank/filter maintenances and stocking options etc, all fairly straightforwards really once you get used to looking after fish tanks, one step at a time