I picked up one of these fluval 13.5 gallon aquariums, and it has a little chamber for filtration on the back. SOMEONE ripped up the default foam block that fits in there, and it got me wondering if I could use some of that modular foam that comes in pelican cases? Or should I just buy the replacement?
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Pelican case foam is typically nasty oily with god knows what chemicals. Just a heads up, from someone who used to work with it.
As long as water can pass through it, that should be fine
