Surface skimmer for Aquaclear 20 HOB filter
thingiverse
A small surface skimmer for a hang on back Aquaclear 20. I removed the bottom piece of the nozzle. The surface skimmer box then slides right up to the AC nozzle. The right side where the outlet sits, is has no teeth, so it does not skim the water again. Should only be used with constant water level, otherwise it will draw air and the pump runs dry. Adjust the skimmer on your lowest water level. I printed it in PETG since i heard this should be aquarium safe. Can be printed upright without support for me.
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