TETRA - TetraPond Algae Control Pond Block - 4-Count

Product Description
Tetra Pond Block helps clear cloudy water and remove algae from ornamental ponds or fountain water. Pond Block is limited for use in backyard/homeowner ponds and water fountains. For containerized ponds only. Not recommended for use with live plants. EPA registered.

Package Description: 4-Count

Serving Size: ..

Number of Servings: ..

Active Ingredients
Copper sulfate pentahydrate 1.02%
Diuron [3-(3,4 dichlorophynyl)-1, 1-dimethylurea 0.51%
Other Ingredients 98.47%
Use 1 block for water volumes between 100 and 250 gallons (380L-950L). Initial dose may require 1 black for each 100 gallons. For regular maintenance, replace block when fully dissolved (usually after 30 days). Not recommended for use with live plants.
  • Not recommended for use with live plants.
  • For containerized ponds only.
  • Pond block is limited for use in backyard/homeowner ponds and water fountains (maximum 3,000 gallons).
  • Do not use fish from treated ponds or fountains for food or feed.
  • Pond Block helps clear cloudy water and removes algae from ornamental pond/fountain water
This product contains a chemical known to the State of California to cause cancer.


The products sold on this site are not approved to diagnose, treat, cure or prevent disease. Information on this site including any product label or packaging should not be considered as a substitute for advice from a healthcare professional.


This Site is not intended to provide diagnosis, treatment or medical advice. Products, services, information and other content provided on this Site, including information that may be provided on this Site directly or by linking to third-party websites are provided for informational purposes only. Please consult with a physician or other healthcare professional regarding any medical or health related diagnosis or treatment options.


Always check the product label or packaging prior to using any product. If there are discrepancies, customers should follow the information provided on the product label or packaging. You should contact the manufacturer directly for clarification as to product labeling and packaging details and recommended use. Please also consult your physician for a complete list of indications, warnings, precautions, adverse events, clinical results, and other important medical information.


All Vitamin Grocer orders are shipped from the East Coast of the United States. Vitamin Grocer offers two shipping options with different costs depending upon whether or not your order value is greater than £30. The standard processing time for all orders is 2 business days.

Vitamin Grocer's standard shipping option is DHL eCommerce's Packet International service. DHL transports the package from the Vitamin Grocer warehouse to your local mail carrier who delivers the package to your front door. Orders over £30 ship for FREE using this service. See table below for more details.

In addition, Vitamin Grocer now offers a shipping option with door-to-door tracking for an additional charge. This service is DHL eCommerce's ePacket service. Unlike our standard service, which generally only provides tracking up to the port of entry of the destination country. ePacket provides door-to-door tracking with delivery confirmation. See below for rates and additional details.

In addition to the UK, we also ship to Ireland, Finland, France, Netherlands, Norway and Switzerland. Unfortunately, door-to-door tracking is not currently available for deliveries to Norway.










[powr-faq id=4141c34f_1496769733]



Vitamin Grocer UK is a property of Lycka, LLC

2221 Industrial Highway

York, PA 17402