---
product_id: 13731104
title: "API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle, White, Model:170B"
brand: "api"
price: "R$442"
currency: BRL
in_stock: true
reviews_count: 9
category: "Api"
url: https://www.desertcart.com.br/products/13731104-api-pond-ph-down-pond-water-ph-reducing-solution-16
store_origin: BR
region: Brazil
---

# Safe for delicate fish & plants Phosphate-free formula Precise pH control 6.8-8.0 API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle, White, Model:170B

**Brand:** api
**Price:** R$442
**Availability:** ✅ In Stock

## Summary

> 🌿 Keep your pond pristine and your fish thriving with every drop!

## Quick Answers

- **What is this?** API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle, White, Model:170B by api
- **How much does it cost?** R$442 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/13731104-api-pond-ph-down-pond-water-ph-reducing-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 Legacy:** Over 50 years of API innovation for crystal-clear, healthy ponds.
- • **Phosphate-Free Power:** Avoid algae bloom while balancing your pond’s pH effortlessly.
- • **Precision pH Control:** Maintain the ideal 6.8-8.0 pH range for a thriving aquatic ecosystem.
- • **Fish & Plant Friendly:** Gentle formula ensures safety for sensitive pond inhabitants.
- • **Easy Weekly Maintenance:** Simple testing and dosing routine keeps your pond perfectly balanced.

## Overview

API POND pH DOWN is a 16-ounce, phosphate- and nitrate-free solution designed to safely lower alkaline pond water pH to an optimal 6.8-8.0 range. Its gentle formula protects delicate fish and plants while preventing algae growth, making weekly maintenance easy and effective for a vibrant, healthy pond environment.

## Description

Safely and quickly lower the pH in your freshwater pond for more acidic water conditions with API POND pH DOWN Pond Water pH Reducing Solution. pH is the measure of acidic or alkaline water conditions. Water with a 7.0 pH level is considered neutral. Levels over 7.0 are considered alkaline, and levels under 7.0 are considered acidic. Different fish need different pH levels to stay healthy. Levels that are too high or too low can cause stress, illness and death, so pond water pH testing is crucial to the health of your fish. API POND pH DOWN Pond Water pH Reducing Solution is designed to lower pH in water that tests at an undesirable level. It is colorless and easy to use. It will not cloud or color water, and because it's phosphate- and nitrate-free, it will not encourage algae growth. Use as directed to keep pH levels in pond water between 6.8 and 8.0, an ideal range for garden ponds. With API POND products, it’s easy to keep a beautiful pond. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your pond. API POND Pond 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 koi, catfish, perch, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your pond. Make sure to use all products as directed in order to ensure the best results.

Review: Works great. - Works like a charm and quickly.
Review: Works! - At first I didn't think it worked at all, but then discovered that my test strips were expired and not working any longer. I got new pond test strips, and the pH and Alkalinity are perfect!

## Features

- Contains one (1) API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle
- Lowers pond water pH with a phosphate-free formula
- Slowly neutralizes alkaline substances that cause high pond water pH
- Safely correct pH problems in pond water, even with delicate fish and plants
- Test water weekly and use to correct pH level in ponds

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001CL6QMM |
| ASIN  | B001CL6QMM |
| Age Range Description | All Ages |
| Best Sellers Rank | #62,647 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #122 in Water Garden & Pond Treatment |
| Brand Name | API |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (524) |
| Date First Available | November 17, 2008 |
| Date First Available  | November 17, 2008 |
| Department | Unisex-Adult |
| Department  | Unisex-Adult |
| Directions | 1. Remove the bottle of API Pond pH Down from its packaging. 2. Test level your pond water using a test kit. 3. Determine amount needed to lower desired range (6.0-7.5) based on results and pond's volume. 4. Slowly pour recommended into pond, avoiding direct contact with plants fish. 5. Re-test after 24 hours adjust as necessary. 6. Repeat steps 4 5 until is achieved. 7. weekly use maintain level. |
| Included Components | API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle |
| 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 | 8.5 x 2.5 x 2.5 inches |
| Item Weight | 1.2 Pounds |
| Item model number | 170B |
| Item model number  | 170B |
| Manufacturer | Mars Fishcare |
| Manufacturer  | Mars Fishcare |
| Material | Plastic |
| Model Name | API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle |
| Number of Items | 1 |
| Product Dimensions  | 2.5 x 2.5 x 8.75 inches; 1.2 Pounds |
| Size | Ph Down |
| Specific Uses for Product | Urinary |
| Style | Down |
| Target Audience Keyword | algae-eaters, betta-fish, bottom-feeder-fish, cichlid-fish, fish, goldfish, invertebrate-fish, mollusks, octopuses, rays, sharks, snails |
| Warranty Description | kkk |

## Product Details

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

## Images

![API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle, White, Model:170B - Image 1](https://m.media-amazon.com/images/I/51OXAWQdRRL.jpg)

## Questions & Answers

**Q: Is this good for African cichlids**
A: This can be used in aquariums or ponds.  But i am surprised you need to lower your pH for African Cichlids.  Of course this depends what your pH is but keep in mind that rift lake fish need a pH higher than neutral.

**Q: Is there any difference between this an their smaller bottles used with aquariums? Other than the amount?**
A: It is the same product. The amount you need depends on your tank size(s). Some people just have a small aquarium in their home while other people have 3000 gallons of fish tank. 😉

**Q: Why doesn't it say anywhere how much water a bottle of this can treat?**
A: A 160z bottle can treat 4730gallons of pond water.

**Q: what is the difference between the two products Ph down for ponds and ph down for aquariums? Are the ingredients and strength the same?**
A: The PH is dropped regardless where the body of water is. Pond, pool, aquarium,  fountain ask the same. Just pay attention to the correct dosing for the volume of water.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great.
*by T***N on September 26, 2025*

Works like a charm and quickly.

### ⭐⭐⭐⭐⭐ Works!
*by R***E on April 19, 2024*

At first I didn't think it worked at all, but then discovered that my test strips were expired and not working any longer. I got new pond test strips, and the pH and Alkalinity are perfect!

### ⭐⭐⭐⭐⭐ A must have product for pond owners
*by D***E on December 7, 2024*

API is my favorite product for about anything. Great value, takes the pH down safely for my koi fish health. Doesn't effect clarity at all. Doesn't effect my plants.

## Frequently Bought Together

- API POND pH DOWN Pond Water pH Reducing Solution 16-Ounce Bottle, White, Model:170B
- API POND pH UP Pond Water pH Raising Solution 16-Ounce Bottle
- API POND WIDE RANGE pH TEST KIT 160-Test Pond Water Test Kit

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-20*