
Originally Posted by
OrionN
All the energy used by any device (pump, heater, light, chiller (yes chiller)) will end up as heat. MH, PC, T5 does not matter that much. If you put 400 W into the ballast, light and heat will come out and light will eventually end up as heat. Reefers just move the heat from one place to another by various devices that we have in our tank.