I have two evos! Both pretty much identical upgrades. Intank media racks in chamber 1 with floss, carbon, purigen, and matrix. Heaters in chamber 2, eheim compacton 1000 return pumps, innovative marine diy mesh lid, and ai prime lights. The only difference is one has a tunze nano ato and a nero 3, and the other has an auto aqua mini ato with a hydor nano power head. These tanks are soo much fun!