Sign in to unlock exclusive benefits
30-Day Free Returns*
The API pH Down Freshwater Aquarium Water Treatment is easily one of the top solutions in our aquarium fish supplies category to optimize water conditions in freshwater aquariums. As a well-trusted product from API for aquariums, the water treatment will safely lower and stabilise pH in aquariums with excess alkalinity. Thus creating the ideal environment for fish and plants. The primary benefit of this product is the safe range of pH for fish health.
Moreover, API® pH DOWN is a pH adjuster that lowers high pH levels in freshwater aquariums, making the water more acidic when it rises above neutral (7.0), which is important since pH affects fish and plant health and should be tested regularly.
Specification
Liquid pH adjuster
Lowers pH in freshwater aquariums
Colorless
Does not cloud water
Does not promote algae (phosphate/nitrate free)
Safe for fish and plants when used as directed

Got our delivery on time unlike other sellers
Unlike other store tank treatment, here prices are quite reasonable.
Was skeptical about using thinking whether safe for not, but Kwikpets helped me understand that it is safe and there are no side effects. And today m using it for our tank. Thanks KWIKPETS.
We use it once in two weeks and it just keeps our fish tank in good health. I recommend
Use code: WELCOME10
To Get Instant 10% Discount on Your First Order!
Screen reader optimized
Clear flashes & reduces color
More focus & fewer distractions
Assist with reading & focusing
Enhances website's visuals
Enter your email to claim your exclusive welcome discount.
We sent a 6-digit code to
Your code is ready to use. Apply it at checkout.
—
This referral discount is only available for first-time customers. Thanks for being a loyal shopper!