2019-4-20 · Aquarium Algae Control: How to Get Rid of Algae in a Fish Tank. Updated on April 20, 2019. ... Water changes I do a 25% water once 8 days.I'm real fussy with my tanks as they are more entertaining than most evenings on t/v. keep the pesky snails but keep them in check they do help snails on your glass means Algae. Vac the grass with water changes.