i want to build an algae scrubber to fit in the cabinet below my 6.5ft tank, i dont have a sump, i have looked at the diy overflow and i see its quite easy to make an overflow from plastic pipe and plastic joints, i want to use a small container or tank just for an algae scrubber

how do i control the water level in the sump , it will need to keep the pump submerged but keep the water low enough to allow me to hang the alge scrubber above the water level

can somone please help with the sump design to achieve what i want :geek:

thanks