I keep my double filter and associated short hoses in a an appropriate sized plastic container. 1, it keeps everything together and 2, protects the filter housing from harmful UVs. Per the manufactures recommendation I do not drain the water totally out of the filter for storage, just enough to keep water from spilling out. The filters are rated for several hundred gallons of water. No reason to change them until necessary.
Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."