It's a month and a week old. So almost a month and a half. Live sand. Live rock. Water from a previous tank and a aqua clear with bioballs from a pre established aquarium with filter floss. The tank has two small percula clowns and 1 clown goby and the parameters are decent ammonia is less than .5 and the nitrite is around .25 with nitrate at about 10 ppm
. I just did a water change and added prime today. So hopefully that helps him. It's got lots of light, 50 3 watt LEDs by marine land with 3 moon lights and the aqua clear is a 20 gallon filter and it has about 7 pounds of rock in a 5 gallon system, I know crazy nano but I do have 2 other aquariums for the clowns when they get to big. I've got a 10 for when they're abou 1.5 Inches and a 29 gallon once they get 2 inches.