As it seems you guys have not seen this type of tank b4 heres a little description of how it works
Firstly water from the tank flows over this comb into the skimmer chamber
Then as my dodgy arrows show thats how it flows through the compartments
After the water is skimmed it flows up through the blue sponge ( apparantly the sponge is there to take the
micro bubbles out from the skimmer but i've taken that out and i do not have any problems with bubbles)
Then it trickles down through the bioballs ( i've taken them out and filled that chamber with small frags of live rock
then the water goes into the center chamber and gets pumped back into the tank, this chamber is where i get all my evaporation from, the level in the main tank never drops its here that i lose water
The chamber i've marked as #1 is a dry chamber and where all the cables from pumps and heater blah blah run into the cupboard below and #2 chamber is where the circulation pumps are housed
Matt