Winter preparations or changes

[tygunn]

I'm finding this to be true with my acrylic lids on my sump. I forgot that acrylic actually absorbs water. I'll likely be adding vertical pieces to the tops of the lids to give it more strength to try and prevent it.

Haha yeah I got a big thin sheet for the tank and wow is it deformed now. I considered glass but I have a bad track record of breaking glass tops.

I will have to cut some reinforcement strips...

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