i had a request for some pics of the back of the tank/skimmer so here they are.
in the chambers there is nothing really, each chamber is about 4".
chamber 1 is the mj1200 for the skimmer
chamber 2 is the dump off for the skimmer
chamber 3 is empty
chamber 4 has the heater and return pump, soon to be upgraded.
i am considering turning chamber 3 into a "refugium" just some algae perhaps.