Crystal Clear Aquatics AAD00267 2-Piece Zap-Tasia Control Gel Pre-Loaded Syringe Kit This is a unique all natural, non-toxic solution to aiptasia growth in marine aquariums The slow dissolving formula allows the components to grip the anemone, ensuring complete control of regrowth Zap-tasia control gel is fish and reef safe; any excess gel will dissolve over a short time and is harmless to tank and inhabitants Zap-tasia control gel can also be used to combat other nuisance anemones and polyps Comes with 2-piece syringe per kit