Hey man, great build with lots of great info!!! Sorry to hear about the fish... but I have a few questions about your setup if you don't mind. My first question is about your most recent picture... in the first few pictures of the tank the background was black from the dry Epoxy, but in your most recent picture it was blue, what did you change??? Also, you said you are switching from the sump to an FX5, will that be enough filtration for a 600 gallon tank? The reason I ask is that I'm currently planning a 300 gallon plywood tank build and I'm looking for epoxy coatings (while taking into consideration the interior color of the tank) and filtration setups. I've heard a sump is the only way to go with larger tanks, but would one (or two) FX5's be sufficient for 300 gallons? Sorry for all the questions, I was just hoping to pick your brain. Thanks!