I finished putting in a homemade bog filter last night and it really cleaned up the water. It is simple with water flowing through boxes of gravel that I will plant over the next week. I am planning on using this type of filtration for my 1/10 acre pond.

Here is the system.

Pic of the hole spacing on bog pvc drain.

This is the filter half completed.

Filter draining into the trout tank.

You can see some of the perch by the pump. Before today I had to drain the water to see them.

Here is the whole rig. I had to use hardware fabric to filter the water coming in from the trout tank as there was too much FA coming in.



I also moved the submerisble aquarium heater placing it horizontal. When the perch crowd the bottom of the tank to get near the heater they dont touch it now, which I think killed about 8 perch since I put in the heater. No perch have died since I changed the heater orientation.