---
product_id: 2284042
title: "Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count"
brand: "tetra"
price: "B/.39"
currency: PAB
in_stock: true
reviews_count: 9
category: "Tetra"
url: https://www.desertcart.com.pa/products/2284042-tetra-pond-block-controls-algae-in-ornamental-fish-ponds-4
store_origin: PA
region: Panama
---

# Dissolves over ~30 days Treats up to 250 gallons each 4 blocks per pack Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count

**Brand:** tetra
**Price:** B/.39
**Availability:** ✅ In Stock

## Summary

> 🌿 Clear waters, happy fish, zero algae drama!

## Quick Answers

- **What is this?** Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count by tetra
- **How much does it cost?** B/.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/2284042-tetra-pond-block-controls-algae-in-ornamental-fish-ponds-4)

## Best For

- tetra enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Legacy:** Backed by 50 years of Tetra expertise in aquatic care and innovation.
- • **Algae-Free Oasis:** Keep your ornamental pond crystal clear and algae-free with ease.
- • **Perfect Coverage:** One block treats up to 250 gallons, ideal for medium-sized ponds and fountains.
- • **Simple & Safe Use:** Designed exclusively for ornamental ponds—just follow dosage for flawless results.
- • **Long-Lasting Treatment:** Each block dissolves slowly over 30 days for continuous algae control.

## Overview

Tetra Pond Block is a trusted algae control solution designed specifically for ornamental fish ponds. Each pack contains 4 blocks, with each block treating up to 250 gallons of water and dissolving over approximately 30 days. Ideal for maintaining crystal-clear water without harming fish, it’s not recommended for ponds with live plants. Backed by 50 years of Tetra’s aquatic expertise, this product ensures a beautiful, algae-free pond environment with minimal effort.

## Description

For 50 year, fishkeeping enthusiasts have looked to the Tetra name for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need–from a large variety of quality fish food and innovative equipment to test kits and decor. Algae growth can quickly take over a pond and cloud your water. Conquer algae growth with TetraPond products so you can keep a beautiful oasis. TetraPond Pond Block removes pond algae for clean and clear pond water. Pond Block helps control algae growth in ornamental fish ponds. Use one block for water volumes between 100 and 250 gallons. Replace block when the previous block has fully dissolved for regular maintenance. Dissolving usually takes about 30 days. This pack contains 4 blocks. TetraPond Pond Block is for containerized ponds and fountains only. Not recommended for use with live plants.

Review: Clean pond - This is the only thing that has worked to keep Algae out of my pond. Ever!
Review: Great project for keeping fountains clear. - Keeps my 5 garden fountains algae free.

## Features

- Helps control algae growth in ornamental fish ponds
- Not recommended for use in ponds with live plants
- Each block treats 250 gallons
- Carefully follow dosage instructions
- Not for use in non-ornamental ponds

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0034CAYDO |
| Allergen Information | Gelatin Free |
| Best Sellers Rank | #13,503 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #55 in Water Garden & Pond Treatment |
| Brand | Tetra |
| Brand Name | Tetra |
| Customer Reviews | 4.4 out of 5 stars 1,190 Reviews |
| Global Trade Identification Number | 00046798167358 |
| Included Components | 1 x Controls Algae Growth In Ornamental Fish Ponds |
| Item Form | Liquid |
| Item Type Name | Tetra Pond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds |
| Item Weight | 5.6 ounces |
| Liquid Volume | 100 gallons |
| Manufacturer | Tetra |
| Manufacturer Part Number | 16735 |
| Model Number | 16735 |
| Number of Packs | 4 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 046798167358 |
| Unit Count | 1 Count |
| Warranty Description | See label |

## Product Details

- **Brand:** Tetra
- **Item Form:** Liquid
- **Item Weight:** 5.6 ounces
- **Liquid Volume:** 100 gallons
- **Number of Packs:** 4

## Images

![Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count - Image 1](https://m.media-amazon.com/images/I/7183XbaKpgL.jpg)
![Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count - Image 2](https://m.media-amazon.com/images/I/91r7NoLsaML.jpg)
![Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count - Image 3](https://m.media-amazon.com/images/I/71-y7dKLBNL.jpg)
![Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count - Image 4](https://m.media-amazon.com/images/I/51JgpeEAy8L.jpg)
![Tetra Pond Block Controls Algae In Ornamental Fish Ponds, 4 Count - Image 5](https://m.media-amazon.com/images/I/91SHLv93I9L.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Questions & Answers

**Q: What are the ingredients?**
A: ACTIVE INGREDIENTS: Copper Sulfate pentahydrate 1.02%; 1-dimethylurea 0.51%OTHER INGREDIENTS: 98.47% NOTE: Ingredients taken from package label.

**Q: How long until you start to see the water clear up?**
A: The length of time it takes to clear up the algae will depend on a number of things such as the overall water quality of the pond, the stocking level, your filtration, the amount of organic matter in the pond, and so forth.  The more organic matter, the softer the water, the less effective and more time it will take.  In a situation such as this, we recommend a partial water change initially, prior to dropping the blocks in.  For more assistance, please contact the Tetra Consumer Relations Team at 1-800-526-0650.

**Q: Is the block supposed to disolve? its been in my pond for two weeks and still the same as when it went in.**
A: No. That's why I like it. It gets smaller over time and takes about 3 - 4 weeks to disappear.

**Q: will the Tetra Pond Anti Algae Block work in a 40 gallon aquarium that has 2 turtles
that are 30 years old.  Will it harm them.**
A: I use it in my goldfish pond. And my box turtles have access to it. No harm has come to either animal as long as the water is aerated.  This product removes the oxygen from the water.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Clean pond
*by M***N on July 1, 2026*

This is the only thing that has worked to keep Algae out of my pond. Ever!

### ⭐⭐⭐⭐⭐ Great project for keeping fountains clear.
*by D***J on June 20, 2026*

Keeps my 5 garden fountains algae free.

### ⭐⭐⭐⭐⭐ Works Extremely Well. More Than Satisfied. Great Price
*by K***N on October 7, 2025*

Worked Extremely Well. Used 2 of the 4 blocks to start. Took about 10 day to really see any results and then added the other 2 blocks and water seem to get clearer as time went by. Still had some algae lingering but I don't have a very big filter. Can actually see my fish now....and some of the bottom. Signed up for a monthly subscription. Again EXTREMELY SATISFIED with this product. VERY REASONABLY PRICE and EASY TO USE.

## Frequently Bought Together

- Tetra Pond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds (16735)
- Summit Clear-Water Barley Straw Pond Treatment, 2-Pack, Treats upto 2000 Gallons, 1000 Gallons per Bale
- API POND ALGAEFIX Algae Control 32-Ounce Bottle, FISHAQUARI (169G)

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-08-13*