In addition to the Diamond Goby being added, ten little Hermit Crabs have also been added to assist the algae problem. They will clean both rocks and sand which will be a big help for the Lawnmower lenny and Diamond Goby. The tank is 90 gallons so there will be plenty of algae to go around especially since the tank is set up to eventually be filled with coral.
These little guys are very hardy and won't be too bothered by high ammonia, nitrates and nitrites near the soil. They are really tiny. :D