Its a algae bloom most difintely caused by direct sun light...water changes do not help....a diatom filter will take care of it within a hour...i have had this pop up every couple years in my 20 years of fish keeping....and always have had the diatom for this reason
Sent from my SPH-D710 using MonsterAquariaNetwork App
Sent from my SPH-D710 using MonsterAquariaNetwork App