Tetra Pond Blocks

Helps Control Algae Growth in Ornamental Fish Ponds Without Plants

Offers an easy, effective way to control and prevent the growth of algae. Leaves pond water crystal clear. Helps keep pond clear from algae when used regularly. Pond block is not recommended for ponds with plants.


For best results, place the block in an area of the pond that is calm.

Tetra Pond Block Application Rates
Pond Size (gallons) 100 - 250 gallons Dose - 1 block
For regular maintenance, replace block when fully dissolved (usually about 30 days)
Initial dose may require one block for each 100 gallons

Size Options:

  • 4 blocks (treats up to 1,000 gallons)
  • 50 blocks (treats up to 12,500 gallons)

Webb's SKU:
Your Price:
Pond Points:
25 Worth $0.25
Stock Info:
In Stock
Your Total:


Tetra Pond Block 4 pc. (MPN 16735)
16735 - Tetra Pond Block 4 pc. (MPN 16735)
$11.95 | 25 Points | In Stock
Tetra Pond Block 50 pk, bulk jar (MPN 16310)
16310 - Tetra Pond Block 50 pk, bulk jar (MPN 16310)
$133.49 $98.69 | 225 Points | In Stock

You Might Also Like...

Microbe-Lift PL 1 pint (MPN 10PLP)
SKU: 12345
$24.20 $19.36 (Save 20%)
48 Points | In Stock
Laguna Algae Brush, Small (MPN PT936)
SKU: PT936
$25.99 $20.99 (Save 19%)
55 Points | In Stock
Aqua Ultraviolet 8 watt UV, 3/4" barbs, black (MPN A00001)
SKU: 00001
$396.00 $277.20 (Save 30%)
693 Points | In Stock
Yellow Pond Gloves Medium (MPN 772M)
SKU: 51015
$18.95 $15.16 (Save 20%)
32 Points | In Stock
Special pricing on this item is active. Buy today to save!
Banner Adverts
Free Shipping on orders over $49
Email Banner
Deal of the day
Pond Tech
Family Owned
Webb's Water Gardens
Your Cart
Your Cart: Empty
Quick Store Search
Online Store Search
Webb's Exclusive Offers: FREE Shipping and Discount Codes Click Here for Details
Product Types

We Have The Largest Selection of Pond Supplies and Equipment Available on the Planet

Accepted Payments | Visa, MasterCard, American Express, Discover, PayPal Authorize.Net Merchant - Click to Verify
© 1981-2023 Webb's Water Gardens, all rights reserved worldwide.
Software: Kryptronic eCommerce, Copyright 1999-2023 Kryptronic, Inc. Exec Time: 0.13713 Seconds Memory Usage: 15.830238 Megabytes