---
product_id: 5838171
title: "API pH UP"
brand: "api"
price: "₪135"
currency: ILS
in_stock: null
reviews_count: 13
category: "Api"
url: https://www.desertcart.co.il/products/5838171-api-ph-up
store_origin: IL
region: Israel
---

# Phosphate-free, plant-safe formula Safe for diverse freshwater fish species Precise pH control ±0.5 units API pH UP

**Brand:** api
**Price:** ₪135
**Availability:** ❌ Out of Stock

## Summary

> 🐟 Elevate your aquarium’s vibe with flawless pH balance!

## Quick Answers

- **What is this?** API pH UP by api
- **How much does it cost?** ₪135 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/5838171-api-ph-up)

## 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

- • **Easy Weekly Maintenance Routine:** Use with weekly pH testing to keep your tank thriving
- • **Trusted API Quality for Over 50 Years:** Research-driven, reliable solution for aquarium enthusiasts
- • **Tailored for Freshwater Fish Diversity:** Supports tropical fish, goldfish, mollies & more with perfect pH
- • **Stabilize Your Aquarium’s pH Like a Pro:** Slowly neutralizes acidity to maintain ideal water balance
- • **Phosphate-Free Formula for Crystal Clear Water:** Prevents algae blooms while protecting aquatic plants

## Overview

API pH UP Freshwater Aquarium Water pH Raising Solution is a 16-ounce, phosphate-free formula designed to safely raise and stabilize pH levels in freshwater aquariums. Ideal for a wide range of fish species and plants, it prevents algae growth while slowly neutralizing acidic substances. Trusted by aquarium hobbyists for over 50 years, it ensures a healthy, vibrant aquatic environment with easy weekly maintenance.

## Description

pH is the measure of acidity of water, on a scale ranging from 0 to 14. A pH of 0 is the most acidic, while a pH of 14 is the most alkaline. Different geographies have different tap water conditions with different pH levels, while fish require a specific pH level to thrive. A pH of 7.0 is ideal when keeping a community aquarium containing a variety of tropical fish. Goldfish and livebearers prefer a pH of 7.5. Many desertcartian fish, like angelfish and neon tetras, prefer a pH of 6.5 to 6.8. Mollies and swordtails thrive at pH 7.2 to 7.5. API pH UP Freshwater Aquarium Water pH Raising Solution raises aquarium pH in freshwater aquariums to desired level. Safe for fish and plants. Use when setting up a new aquarium, adjusting pH, or changing water. pH in an aquarium can fluctuate due to fish waste, uneaten food and addition of tap water. It is recommended to test water for pH weekly. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.

Review: works great - works great raising my aquarium ph water in my area has very low ph put a little in my tank each weak to keep my ph stable
Review: Works great - Works great

## Features

- Contains one (1) API pH UP Freshwater Aquarium Water pH Raising Solution 16-Ounce Bottle
- Raises freshwater aquarium water pH with a phosphate-free formula
- Does not promote algae growth with pH adjustments and is safe for plants and fish
- Slowly neutralizes acidic substances that cause low water pH
- Test water weekly and use to correct pH level in freshwater aquariums

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002ASGC2 |
| ASIN  | B0002ASGC2 |
| Best Sellers Rank | #8,678 in Pet Supplies ( See Top 100 in Pet Supplies ) #66 in Aquarium Water Treatments |
| Brand Name | API |
| Color | No Color |
| Country of Origin | United States |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,577) |
| Date First Available | June 15, 2004 |
| Date First Available  | June 15, 2004 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Directions | Test the pH level of pond water with an API POND WIDE RANGE PH TEST KIT. Using the dosing cap on the bottle, add 10 ml (2 tsp.) of pH UP for each 50 U.S. gallons (190 L) of pond water. For best results, add to water flow. Tip: pH UP works by slowly neutralizing acidic substances that cause low pH in pond water. It’s important to test the pH when using pH UP. pH should be raised no more than .5 uni… |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 2.5 x 2.5 x 8.75 inches |
| Item Package Dimensions L x W x H | 7.72 x 2.28 x 2.2 inches |
| Item Weight | 1.2 Pounds |
| Item model number | 31B |
| Item model number  | 31B |
| Manufacturer | Mars Fishcare |
| Manufacturer  | Mars Fishcare |
| Material | Plastic |
| Model Name | PH UP PROF. SIZE - 16 OZ. |
| Number of Items | 1 |
| Product Dimensions  | 2.5 x 2.5 x 8.75 inches; 1.2 Pounds |
| Size | 1P |
| Style | Aquarium Treatment |
| Target Audience Keyword | fish, fish;algae-eaters; betta-fish; bottom-feeder-fish; cichlid-fish; goldfish; invertebrate-fish; mollusks; octopuses; rays; sharks; snails |

## Product Details

- **Brand:** API
- **Item Form:** Liquid
- **Item Weight:** 1.2 Pounds
- **Liquid Volume:** 16 Fluid Ounces
- **Manufacturer:** Mars Fishcare

## Images

![API pH UP - Image 1](https://m.media-amazon.com/images/I/51MVfM5NJVL.jpg)

## Available Options

This product comes in different **Size** options.

## 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!

## Customer Reviews

### ⭐⭐⭐⭐⭐ works great
*by S***N on January 12, 2026*

works great raising my aquarium ph water in my area has very low ph put a little in my tank each weak to keep my ph stable

### ⭐⭐⭐⭐⭐ Works great
*by T***H on December 18, 2025*

Works great

### ⭐⭐⭐⭐⭐ Great product great price
*by T***N on January 14, 2026*

Work in my fish tanks Love this product

## Frequently Bought Together

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

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-03-07*