once I got it full, I realized my sand was looking too light, I had used a 1:1 ratio of flourite black sand and crystal river sand, and wanted to add more black. I removed a lot of sand with a siphon and added a darker mix, then drained and refilled the tank. it's looking pretty good.
Before I decided to change the sand, I had actually got the 2215 filter running as well. Great flow.