Aquarium Pharmaceuticals pH Down lowers pH and makes aquariums more acidic. API pH Down is fast acting, colorless, easy to use and will not cloud or color aquarium water.

• Lowers pH for freshwater aquariums
• For community aquariums, soft water and live-bearing fish
• Will not cloud or color aquarium water
• Colorless formula will not cloud or color aquarium water.
• Contains no phosphates, a major source of algae outbreaks.

The following pH levels are recommended for freshwater tropical fish:

Egg-laying fish: 6.6 to 6.8 (slightly acidic)

Community aquarium: 7.0 (neutral)

Live bearing fish: 7.2 to 7.6 (slightly alkaline)