The water level will more than likely be fine, why so many baffles?
Eventually, I'd like to run a BioPellet, GFO, and Carbon reactors. I want to house all of the equipment inside the sump. Also, I want each device to operate independent from each other. So, they can be turned on/off, and taken out for maintenance without effecting other devices.
My research tells me that BioPellet output should be skimmed. UV, Carbon, and GFO reactors works best with skimmed/filtered water.
To accomplish the above requirements, I am going to house the GFO in the first chamber. The output line will go over the baffle, and then plumped to or placed close to the skimmer intake. This way I will increase the probability of most of the BioPellet output be skimmed before returning to the tank.
Second chamber will go the skimmer.
In the third chamber I will place the Carbon/GFO and the UV pumps. The UV will have its own pump. The return outlet lines from all three will go over the baffle to the return chamber. This way, I will increase the probability that the water fed to all three devices are skimmed first.
Some may ask why not combine the GFO/Carbon/UV chamber with the return chamber. If I do that, I have to plump all outlets into the return lines. Too much plumping. Or, I place the outlet lines back to the same chamber. If I do that, I will loose efficiency. Because some of the returned water will find its way back to the inlets.
The last chamber is the fuge. It will be fed by a split from the drain line. The amount of water will be controlled by a valve for slow water movement. I am planning on growing food in that chamber.