Is this good fungus remover for my female betta?

My female betta has this cottony growth on her body and its growing bigger slowly, will this help it? (Look at the Description section) a href="http://www.petco.com/product/10673/API-Splendid-Betta-BettaFix-Remedy.aspx?CoreCat=OnSiteSearch" rel="nofollow"http://www.petco.com/product/10673/API-S…/a