Fluval Flex Inlet Covers

thingiverse

Here are my versions of the Fluval Flex inlet covers that offer improved coverage around the sides. The original covers can be made somewhat shrimp/fry proof by adding foam to them, but their design leaves small gaps on the sides since they don't extend over the inlet slots. My versions also require foam to be shrimp/fry safe, but they overlap the sides. I've included a foam cutter/template to make matching foam inserts. Updated 2020-06-16 I noticed that the fit on the bottom inlet doesn't actually match the top inlet, so the original design wasn't fully compatible for both inlets. So I tweaked the cover for the bottom inlet and renamed all of the files. There are different versions of the covers: TopCovered: Full size cover that is tall enough to cover the top inlet. The top half has smooth sides to prevent shrimps from climbing over the cover and into the first filter chamber. TopFull: The same size as the TopCovered one, but it has holes all over the surfaces. Narrow: For the bottom inlet. Has the same height as the Fluval original covers which will still cover the entire bottom inlet. Narrow_V2: Same size as the regular "Narrow", but I couldn't decide on the orientation of the hexagonal holes.. So this one has them rotated 30 degrees. Foam cutter/template: The interior perimeter is the correct size to fit the full size covers. The "Narrow" markings indicate the size that should be cut to fit the narrow covers. It requires an 18mm snap off blade in order to slice the foam horizontally to the correct thickness. The blade just slides into the slots.