How does the middle chamber (skimmer chamber) stay at a constant water level with those holes where the sponge is? Or does the water just evaporate from the right return chamber? I was looking at the diagrams where it shows the water flow for a berlin system and it shows the water level in the return chamber at the same height as everything else.
Wet/dry converted into sump with a Bubble Magus NAC7 cone skimmer, MAG7 return, 200 micron filter socks, Vortech MP40w + two returns for flow. Current Sundial T5 + two retro Icecap T5's (6 bulbs),