250 milliliter (mL) 8.45 fluid ounce (Fl Oz) bottle of FountSILVER concentrated 99.99+% pure colloidal Silver used to reduce or eliminate the need for harsh chemicals to keep clean water in circulating fountains, water falls and bird baths free of bacteria, mold, fungus or algae. All natural additive to circulating fountains, water falls and bird baths to help keep them free of bacteria, fungus, mold and algae. Contains 99.99+% pure silver colloidally suspended in pure water. Odorless with a long life; other chemical additives are based on chlorine, bromine, iodine (or worse) which are irritating gases in their natural state, evaporated off, need to be replaced often, smell odd, and are not healthy to breath in or expose to sensitive areas such as the eyes. Unlike these other harsh chemical treatment programs, FountSILVER will not harm small animals who drink from water properly treated with FountSILVER. If starting with a NEW circulating fountain, water fall, or bird bath: add one bottle of FountSILVER for every 100 gallons of fresh clean water. For smaller volumes of water, add one (1) tablespoon of FountSILVER to every 5 gallons. FountSILVER can be used by itself or concurrently with lower levels of traditional treatment programs. If starting with an EXISTING circulating fountain, water fall, or bird bath: drain water and clean thoroughly; add one bottle of FountSILVER for every 100 gallons of fresh clean water added. Drain circulating fountain, water fall, or bird bath at the first sign of biological growth, or every 90 days, and repeat. FountSILVER can be used by itself or concurrently with lower levels of traditional treatment program.