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API pH Down
API pH Down
API pH Down

API pH Down

Fast-acting, easy-to-use liquid lowers pH and makes aquarium water acidic. Colorless formula will not cloud or color aquarium water.

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)

API pH Down

Internet Price: $4.99   Today's Price: $3.99  (Save 20%)

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  • Fast-acting, easy-to-use liquid lowers pH and makes aquarium water acidic
  • Colorless formula will not cloud or color aquarium water
  • Made in the USA

Shipping Usually Leaves Warehouse the Next Business Day



1.25 fl. oz.
SKU: 40290

API pH Down
$4.99 $3.99
Repeat Delivery Price: $3.39
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