---
product_id: 694864491
title: "Pond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds (16735)"
price: "€ 38.87"
currency: EUR
in_stock: true
url: https://www.desertcart.fr/products/694864491-pond-block-4-count-controls-algae-growth-in-ornamental-fish
store_origin: FR
region: France
---

# Pond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds (16735)

**Price:** € 38.87
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Pond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds (16735)
- **How much does it cost?** € 38.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/694864491-pond-block-4-count-controls-algae-growth-in-ornamental-fish)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

TetraPond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds (16735)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 0.35 Pounds |
| Liquid Volume | 100 Gallons |
| Target Species | Fish |
| Item Form | Liquid |
| Allergen Information | Gelatin Free |

## Product Details

- **Brand:** Tetra
- **Liquid Volume:** 100 Gallons
- **Item Weight:** 5.6 ounces
- **Item Form:** Liquid
- **Target Species:** Fish

## Images

![Pond Block 4 Count, Controls Algae Growth In Ornamental Fish Ponds (16735) - Image 1](https://m.media-amazon.com/images/I/7183XbaKpgL.jpg)

## 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.

## 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 France*
*Store origin: FR*
*Last updated: 2026-03-18*