---
product_id: 629772764
title: "API pH UP Freshwater Aquarium Water pH Raising Solution 16-Ounce Bottle"
brand: "api"
price: "S$75"
currency: SGD
in_stock: true
category: "Api"
url: https://www.desertcart.sg/products/629772764-api-ph-up-freshwater-aquarium-water-ph-raising-solution-16
store_origin: SG
region: Singapore
---

# Fast-acting formula Phosphate & nitrate-free, algae-safe Colorless, crystal-clear solution API pH UP Freshwater Aquarium Water pH Raising Solution 16-Ounce Bottle

**Brand:** api
**Price:** S$75
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your aquarium’s vibe—because your fish deserve the best!

## Quick Answers

- **What is this?** API pH UP Freshwater Aquarium Water pH Raising Solution 16-Ounce Bottle by api
- **How much does it cost?** S$75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/629772764-api-ph-up-freshwater-aquarium-water-ph-raising-solution-16)

## Best For

- api enthusiasts

## Why This Product

- Trusted api brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Experts:** Backed by API’s 4.6-star rating and trusted by thousands of aquarium pros.
- • **Algae Growth Defense:** Phosphate and nitrate-free to keep your tank algae-free and healthy.
- • **Precision pH Control:** Tailor your aquarium’s pH with pinpoint accuracy for thriving aquatic life.
- • **Instant Clarity Boost:** Fast-acting and colorless formula ensures no cloudiness—just pristine water.
- • **Effortless Application:** Simple dosing instructions make maintaining perfect pH levels a breeze.

## Overview

API pH UP is a fast-acting, colorless liquid solution designed to safely raise the pH level in freshwater aquariums. Its phosphate- and nitrate-free formula prevents algae growth, ensuring crystal-clear water and a healthy environment for your fish. Easy to dose and trusted by thousands, it’s the go-to choice for precise pH management.

## Description

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. Determine the pH of aquarium water with an API pH TEST KIT. To raise pH, add 1 ml. for each 10 gallons of aquarium water. Take another pH reading before adding another dose of pH UP pH adjuster.

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002ASGC2 |
| Brand Name | API |
| Customer Reviews | 4.6 4.6 out of 5 stars (652) |
| Global Trade Identification Number | 00017163020318 |
| Item Form | Liquid |
| Item Type Name | pH Up |
| Item Weight | 544 g |
| Liquid Volume | 16 Fluid Ounces |
| Manufacturer | MARS FISHCARE |
| Manufacturer Part Number | 31B |
| Model Number | 31B |
| Number of Items | 1 |
| Number of Packs | 1 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 017163020318 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** API
- **Item form:** Liquid
- **Item weight:** 1.2 Pounds
- **Liquid volume:** 16 Fluid Ounces
- **Number of Packs:** 1

## Images

![API pH UP Freshwater Aquarium Water pH Raising Solution 16-Ounce Bottle - Image 1](https://m.media-amazon.com/images/I/51MVfM5NJVL.jpg)

## Questions & Answers

**Q: How long after using do you re- test to see how much the pH went up?**
A: We would recommend waiting about a half-hour in order for the water to fully circulate so that you get an accurate reading. If you have a very large system or very little flow, you may want to wait 1-2 hours. You are safe to re-dose at that point as long as you have not changed more than 0.2 in pH, which is the maximum we recommend changing within a 24 hour period to reduce fish stress. If you have any other questions, feel free to reach out to us at 1-800-847-0659 or APITechServices@effem.com

**Q: Can this be used in a tank with invertebrates?**
A: Yes. Many years ago this was labeled for ponds

**Q: This should be fine for a Brackish tank?**
A: You can use it however the KH of a brackish tank might prevent you from lowering the ph.  Please contact API at 1-800-847-0659 and we can help.

**Q: does this come with both ph up and down? Or just one of the two?**
A: Just one bottle,ph up!

## Frequently Bought Together

- API pH UP Freshwater Aquarium Water pH Raising Solution 16-Ounce Bottle
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- API AMMO-LOCK Freshwater and Saltwater Aquarium Ammonia Detoxifier 16-Ounce Bottle

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-10-15*