Hot Tub Defoamer - Pool, Fountain, & Spa - Antifoam Concentrate - Silicone Emulsion - Quickly Removes & Prevents Foam in Water - Eco Friendly & Safe Formula - No Harsh Chemicals - 1/2 Gallon (64 oz.)Brand: Bastion Features: RELIABLE, VERSATILE, & COST EFFECTIVE FOAM CONTROL: Use Bastions Defoamer for pools, spas, hot tubs, fountains, and waterfalls, to finally and fully clear away pesky foam and suds from your water, leaving sparkling clear results. Comprising defoaming and anti foaming properties, this formula takes care of all your foam needs, extending the duration of its results and giving you more time to relax. FAST ACTING & EASY TO USE: