API pH UP pH Adjuster – 118ml
API® pH UP pH adjuster raises pH levels in your aquarium to make water more alkaline when levels fall too low. pH is the measure of acidic or alkaline conditions in water, where a value of 7.0 corresponds to a neutral pH, pH values about 7.0 are considered alkaline, and pH values below 7.0 are considered acidic. Different fish need different pH levels to be healthy, so it is important to test your water regularly to ensure pH levels fall where they should. pH UP pH adjuster is fast-acting, colorless, easy to use, and will not cloud aquarium water. Because it is phosphate-free and nitrate-free, pH UP pH adjuster will not encourage algae growth.
To raise pH, add 1 ml for each 10 gallons of aquarium water. Always test water pH before and after adjustment to ensure proper balance.
| Product Specification |
|---|
| Volume: 118ml |
| Form: Liquid |
| Phosphate-free |
| Nitrate-free |
| Colorless, non-clouding |
FAQ
How much pH UP should I add to my aquarium?
Add 1 ml of pH UP for every 10 gallons of aquarium water to raise pH levels.
Does pH UP affect water clarity?
No, pH UP is colorless and will not cloud your aquarium water.
Is pH UP safe for fish?
Yes, pH UP is designed to safely adjust pH levels without harming fish when used as directed.

Sarah Baker –
I’ve used pH UP for several months now and it works quickly. My tank’s pH stays stable, and I don’t see any algae growth. Easy to measure and mix with the water. Great for maintaining a healthy environment for my betta fish.
Jane Ince –
It’s effective and doesn’t cloud the water like some other products do. I use it once a month when the pH drops. My fish seem more active and the water feels balanced.
Emily May –
Perfect for my freshwater tank. I tested the pH before and after, and it increased steadily. No side effects or algae issues. The instructions are clear and the product is easy to use.