A baffle for keeping floating plants safe from hang on back (HOB) filters, so the flow doesn't knock them under the water.

The model fits over an Aqueon QuietFlow 30 filter but in theory could scale up or down to fit your needs. Baffle floats (just barely) but I also made a little peg to hold it in place against the filter & aquarium hood.

Designed in TinkerCAD, sliced in PrusaSlicer 2.60 alpha5, printed on a Prusa i3 MK3S+ with PLA.

Baffle: Layer height 2mm, 5% infill, no supports, 215C nozzle, 65C bed

Peg: Same as baffle but 20% gyroid infill & a 4mm brim.

I had some warping on the baffle but it didn't cause the print to fail and it still works fine, but I added the brim to the peg just in case. YMMV.

This is the first print I've ever uploaded so if anyone has any comments or suggestions, I'd love to hear 'em!