Aquarium filter
thingiverse
Designed to fit power nozzle pumps upto 100-150L pending the size. I'm using a 100L/H Aquaone but anything will do. Per the image with numbered boxes: 1 & 2) Medium filter sponge 3) Carbon filter sponge Below the pump goes biological media balls Water must pass all 3 chambers in order to be pumped out. I used > PURE < CA glue to bond as thats fine, marine silicone will also work. There is a cap for the filter bottom and another cap to go in the front exit, this may need tweaking pending the pump you have.
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