Mine is not a new tank. Change to FOWLR after CFO complain that the chiller is producing too much heat and the location of my tank is unable to connect to a compressor coil. So no choice, finally have to dismantle the chiller and sump and just using a Eheim canister connect to the overflow.
Subsequently, me and my CFO run into a series of bad luck. One day i told her i suspect this due to us removing all the corals. Surprisingly, she agreed with me and told me to better 'reinstate' the tank.
So here i am, back to reefing again. Buying back all the equipments again and back to the old problems of heat dissipation from chiller. This time round, CFO did not make any more complain. At least for now....