I have overflows that skim the surface water to filter so the floating flakes go right down the filter. I bought these “stamp collector” tweezers to pinch a bit of flakes then I submerge the flakes for a while so they sink.
Works great!
love the afrowana, love that they sift the substrate, that's super cool. Never seen one. Very cool looking fish! The whole set up & stock is mint mate!