I've just finished using my 60L/15gal~ by dosing a fish with antibiotics. I don't need this tank now until mid-summer when i'll be setting it up and planting it etc.
I'm wondering, what should I do with the filter+filter media+tank itself? Will the tank be safe to use again soon or will I need to rinse it?
It is still filled and the filter is running, I thought keeping the filter running would help somehow.
There are two ways I might treat this tank. For the meds, diluting them will make them pretty much gone and harmless. For any diseaes which the meds might not have killed, I would go for a bleach soak overnight and then rinse and leave dry for a couple days. Since you are not planning to use the tank in the near future, I would go the bleach and dry route as it is the one which will do both remove the meds and kill any disease. Keep in mind that meds will often only kill the item they are designed to kill, so it is possible that leaving it running, some unexpected item could live on until a host was added. Also very easy to soak clean. I don't keep empty tanks running for long.