API Ph Down 16 Oz.

PH Down is formulated to slowly lower the pH of pond water (making it more acidic) without harming delicate pond fish or aquatic plants.

Specifications:
Size: 16 Oz.
Directions: For Pond Care pH Down add 1 teaspoonful (5 ml) for each 50 US (190 L / 42 UK Imp. Gal.) gallons of pond water. Then wait 24 hours and re-test.