I'm still trying to design properly for a suitable funnel...probably some plastic pipe(2") is the way I'll go for now. As the feeder is placed directly on the tank cover net, I'll probably hang the pipe on the same net using a couple of drilled holes in the pipe.
In my case, if food is left floating there's a chance some of it will drain down the drain comb, which is skimming the surface(maybe not a great idea in an NPS tank).
Also stopping the return temporarily ins not an option for me, as will raise my sump level , overflowing the internal skimmer.
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