Nice tank. Be careful with that sand. It looks nice but gets compacted over time & 02 starved. Blue green algae loves the stuff. Make sure you get really good flow across the substrate. Do a search on the internet & most of the BGA issues you will see will have that white sand. I had it in my tank . 10% White sand ,85% Flourite , 5% coated gravel. I have been trying to slowly get the stuff out. I tried every trick in the book, finally by accident I nuked the tank for another reason using flagil & it has been gone since. Now the tank is cranking & looking good but there is still about 7% of the original sand in the tank. Periodically its a good idea to disturb the substrate to aerate it & use a credit card along the sides being careful not to hit the seam. Granted the stuff looks good, but be careful if BGA rears its head.