Remove the last baffle and make the return chamber larger like I suggested earlier. That pump will empty that return before the water can make it back to the pump.
Pump power has no bearing on the water level in the last chamber. The amount of water in the entire system does.
If the return pumps greater than the volume draining to the sump, then the chamber will be lower amd could eventually dry out.
This is also why the overflow drain should be located in the return pump chamber Simply add more water and the water level in the last chamber will increase no matter how powerful the pump is.
This isnt necessarily the case. When the drain volume equals to the return the level will be constant. Only evaporation will then change the water level on the last return chamber.
Also, you can run the return chamber that low but it is more desirable to have it close to the level the rest of the sump is atThe water will be highly turbulent at that lower
This is possible but OP's level is fine IMO. I run my level lower and have no issues with turbalance.
level and the pump may be sucking bubbles which could cause cavitation reducing pump life and efficiency.
Pump power has no bearing on the water level in the last chamber. The amount of water in the entire system does. This is also why the overflow drain should be located in the return pump chamber Simply add more water and the water level in the last chamber will increase no matter how powerful the pump is. Also, you can run the return chamber that low but it is more desirable to have it close to the level the rest of the sump is at. The water will be highly turbulent at that lower level and the pump may be sucking bubbles which could cause cavitation reducing pump life and efficiency.
Thanks. I would prefer to leave the baffle, so I will continue with the current setup unless it becomes apparent that it is causing issuesI'm still not seeing why that would be neccessary. Your pump doesn't warrant any need to do that.
But if you feel you need to you could place the bio-media in mesh bags. Easier to maintain and cleaner set up too.