Ok so I’ll be using the end of the gravel vac and will buy a other one to take the end off
So double sided gravel back end both ends have sponge filter and the pellets of gfo in middle small pump pushing water to bottom and clean water comes out top back into take
The pic is a example of how it will be by tank may use large ziptie and put it on other side of filter so it won’t be seen will put on outside to watch for water leaks for a bit
Put the top flush with the tank so the water will flow right into the tank with a short peace of hose
