400 gallon project

[untamed]

Originally Posted by Mr OM

I'm guessing it didn't fit.

It fits...but it is supposed to replace the top lid currently on the skimmer and the builder forgot that the existing top lid has a tube on the underside that is part of the skimmer function.

It also has holes in it, where there shouldn't be holes.

Here's my existing lid on the left...and the replacement lid (with carbon top) on the right. This builder builds things so custom, I don't think he ever does the exact same thing twice. He just forgot that the lid has a function other than carbon filtration. I'll document this better when it is ready to go on.