Laguna Koi Ponds

(949) 494-5107


Algae Control Algae Control

Laguna Koi Ponds
20452 Laguna Canyon Rd.
Laguna Beach, CA. 92651 U.S.A.
Hours of Operation:
Monday-Friday 9AM-5PM Satuday 10AM-5PM
Sunday 11AM-4PM
(949) 494-5107
Pond Calculator App for Android

Water Blocks

Water Blocks

Water Blocks are a great time release algaecide which will keep your pond looking beautiful. Do not use with oxygenating grasses or hyacinths. Totally safe for koi and goldfish. Use full dosage with fish and bog type plants. Use half a dosage if you have water lilies or other sensitive aquatic plants.

This is one of our most popular products.

****Discount for ordering 25 or more is $6.29 per Water Block****

Item #  Description Price Add to Cart
72029 Pond Blocks Small Treats 250 gal. $3.50 Add to Cart
72009 Water Blocks Large Treats 500 gal. $6.99 Add to Cart

PondCare AlgaeFix

PondCare AlgaeFix

PondCare AlgaeFix® is a liquid algae-control product for use in ornamental fish ponds and water gardens containing live plants and fish.

PondCare AlgaeFix® controls many types of algae including "green water" blooms and filamentous algae.

  • Can be used in ponds containing live plants and fish.
  • Effectively controls "green water" algae blooms and blanket weed (Oedogonium).
  • Keeps ornamental ponds and water gardens clean and clear.
  • An EPA registered Algaecide that helps resolve future algae problems.
  1. 8oz (240 ml) bottle treats 2,400 US gallons (9,084 L)
  2. 16oz (480 ml) bottle treats 4,800 US gallons (18,168 L)
  3. 64oz (1.89 L) bottle treats 19,200 US gallons (72,960 L)
Item #  Description Price Add to Cart
49055 AlgaeFix 8 oz $11.95 Add to Cart
49056 AlgaeFix 16 oz $18.95 Add to Cart
49057 AlgaeFix 64oz $51.95 Add to Cart
49058 AlgaeFix 1 gal $88.95 Add to Cart

Tetra Pond Algae Control

Tetra Pond Algae Control

Controls green water and string algae. Effective at combating algae blooms (green water), string and hair algae (Spirogyra) and blanket weed (Oedogonium). Safe for ornamental plants and fish (when used as directed).

  • 8.5 oz. treats 3000 gal.
  • 16.9 oz. treats 6000 gal.
Item #  Description Price Add to Cart
71004 Tetra Pond Algae Control 16.9 oz $18.99 Add to Cart



CrystalClear® ClarityMax™ multi-purpose cleaning action cleans ponds with an unprecedented combination of activated barley, natural bacteria, enzymes and a powerful secret ingredient. These ingredients work in tandem to clean, polish and break down dead organic debris on and around waterfalls, streams, plant pots and filtration systems. CrystalClear® ClarityMax™ also maintains crystal clear water for the long term. Use when water temperatures are above 50™F.

For a sparkling clean and clear pond, apply ClarityMax™ once a week directly to the pond or filtration system.

For persistent pond problems, apply ClarityMax™ up to every 3 days at the prescribed rate until the problem is corrected. Then return to normal weekly application rate.

For ClarityMax™ to work at its maximum potential, pond water pH should be maintained between 6.5 and 8.5. Water temperature should be at least 50°F and dissolved oxygen levels should be above 3 ppm.

Item #  Description Price Add to Cart
27074 ClarityMax 2.5 lb. $59.99 Add to Cart


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AlgaeOffCrystal Clear Algae-Off Granular Algaecide is a granular, oxygen powered algaecide for use on waterfalls, rocks and other surfaces. Put granular application over a wet surface or activate with water immediately following application. Crystal Clear Algae-Off Granular Algaecide provides immediate algae control, as it works on contact.
Item #  Description Price Add to Cart
49068 AlgaeOff 2.5 lb. $26.95 Add to Cart

Barley Straw Extract

Barley Straw Extract

An eco-friendly solution to the problem of green water (algae) in ponds. Enhances pond water chemistry to prevent pond water turning green.

Extract of Barley Straw contains no synthetic chemicals or artificial pesticides. It can be used in any type of pond and with any species of fish.

Dosage first 2 weeks

  • 1 oz. treats 125 gal.

Dosage after first 2 weeks

  • 1 oz. treats 750 gal.
Item #  Description Price Add to Cart
72020 Barley Straw Extract 8 oz $24.95 Add to Cart
72010 Barley Straw Exract 16 oz $36.95 Add to Cart

Barley Straw Pellets

Barley Straw Pellets

Barley Straw Pellets from the makers of Microbe-Lift.

100% Natural & Organic Ingredients, Improves Water Quality, Fish & Plant Health.

  • Revolutionary formula includes natural Peats and Humates.
  • Direct placement in pond enhances substrate.
  • Decomposition process starts immediately.
  • Buffers pH.
  • Provides a slow, steady release of beneficial ingredients by natural, biological activity.
  • Works year-round.
  • Disperses quickly.
Item #  Description Price Add to Cart
72017 Barley Straw Pellets 2.2 lb. $18.95 Add to Cart
72027 Barley Straw Pellets 4.4 lb. $29.95 Add to Cart

Barley Straw

A natural algae control for ponds. It controls algae by decomposing and producing a continuous supply of hydrogen peroxide into your pond. This will inhibit the development of new algae cells. The Barley Straw doesn't kill algae, but it will prevent it from growing. If algae is already a problem you can still put in Barley Straw, it will take several weeks for the water to react and start to clear. The Barley Straw come in a net bag and should be placed in a location where water will flow though it.

Enviro-Reps Tint It Blue

Enviro-Reps Tint It Blue

This product is a great way to provide a sunscreen for your aquatic pond water. Prevents algae from performing photosynthesis, thus preventing "green" water results.

  • A safe U.V. Treatment
  • Limits sun ray exposure to the water
  • Environmentally friendly
  • Not a pesticide, pathogen, or toxin.
  • Keeps ponds clear and beautiful, longer
  • 1 gallon treats 250,000 gallons of pond water
Item #  Description Price Add to Cart
72055 Tint It Blue 8 oz $12.95 Add to Cart
72051 Tint It Blue 32 oz $24.95 Add to Cart
72057 Tint It Blue 1 gal $49.95 Add to Cart