Reef Tank DIY - For Dummies

[WarDog]

Fill it with tap water to test everything running. Also test your sump volume when the return pump turns off. After testing, add some vinegar to help remove oils and such. Run for 1 or two days. Drain it all and then push it into final position.

Also, it looks like your main drain and emergency aren't low enough into your sump. Water is going to splash everywhere.