[SeanGAR]

I removed the floral foam in mine and replaced it with super hydrating crystals. This allows you to remove the whole shebang if it gets moldy and it will also hold way more water than the foam. I removed the foam by running water through it and cutting the foam up with a spatula rather than cutting the top off which I have seen some people do. The super hydrating crystals have been discussed a lot, I bought mine at one of the crafts store. I would definitely recommend this for anybody with an old style foam oasis.