My tank is 4 months old, had nutrients crash before that resulted, in diatoms and cyano, no diatoms anymore im just dealing with cyano on the sand. My nutrients has been fixed up. But i want something to clean the sand. My tank has good flow. Its 36 gallons. Running with vectra s2 , and 2 nero 3 on each side. Would a sand shifting goby work on my sand? In terms of cleaning it with cyano?