Morning Guys a newbie here so please be nice
I am just constructing mt 1sy sleeper pond an are limited to space, after a little research I have decided to go with a bottom drain, with a home made mech & bio filter system.
All of the systems I have seen that are with a bottom drain have the water inlet into the filter at the bottom, I wondered if you could have this at the top or does it have to be at the bottom to work.
Also If you can use it at the top and I use a closed list barrel which I believe will become pressurized, would this be sufficient pressure to return the water to the pond without a pump, or would a pump be required.
Science is not my best subject
Cheers