Originally Posted by fschifano
The thing I like about the setup is you can change any part to fit your needs. I'm running a 300 watt heater. If I decided it was too slow I'd go bigger or might even just go with two heaters. OTOH it's easy enough to just add hot water to the cooler.
A commerical built setup is more of a take it or leave it. It's a lot harder to fine tune things.