photo of a clean backyard pool with woman in Sun hat

Silver Algaedyn is the most effective algaecide on the market, easily taking care of all types of algae, including Black Algae.

  • Kills all algae including Black and Mustard
  • No risk of staining
  • Uses 10x less metal than copper algaecides and is more effective
  • EPA Registered
  • Keeps algae gone all summer
  • Safe for use in all pool types including salt cell

 

About Us

photo of Silver Algaedyn 1Quart Bottle
Silver Algaedyn Quark and Gallon

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Welcome

Silver Algaedyn is manufactured by D.F. Goldsmith Chemical & Metal Corp. in Evanston, Illinois. D.F. Goldsmith is a family business that prides ourselves in producing high quality products at affordable prices.

In production for 60+ years, the proprietary formula uses silver as the active ingredient to easily eliminate all types of swimming pool algae including green, black, mustard, and pink slime.

DF Goldsmith logo on a copper kettle background

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photo of Silver Algaedyn Gallon

EPA Registered

Silver Algaedyn is EPA registered and specially formulated so that algae is eliminated and no staining or discoloring of the pool takes place.

EPA EST. NO. 68161-IL-1
EPA. REG. NO. 68161-1

photo of silver algaedyn being filled in the Evanston IL factory
 

Why Use Silver Algaedyn?

Put simply, because it works. There’s no substitute on the market. When used as directed, Silver Algaedyn destroys algae blooms within 24 hours.

Silver Algaedyn activates the floor and walls of swimming pools, giving them a residual and continuing algaecidal action. Completely effective against black algae and all other types of algae normally found in swimming pools. Silver Algaedyn is odorless and non-foaming at pool concentration and may reduce other chemical usage. Follow our easy maintenance program to keep your pool algae free!

  • Silver Algaedyn targets and destroys every type of algae, including stubborn black algae on pool walls and the slippery, persistent mustard algae.
  • Stronger and more effective than copper = no staining and less metal in pool. With only 0.8% metal content (vs. ~9% in copper-based products), Silver Algaedyn eliminates the risk of staining, surface damage, and metal buildup. Your pool stays clean and clear, without the headaches.
  • Long lasting prevention, great for pool openings / closings
  • Non-foaming, residue-free, and compatible with chlorine, saltwater, and all pool types. Silver Ions stay active longer — keeping your pool clean while reducing chlorine demand. EPA registered for safe, effective use.
  • Trusted by pool professionals across the country – read some professional reviews
  • Pools that have Algaedyn will require less overall chemicals such as chlorine
  • Safe immediately after treatment is administered
  • Owned and manufactured by a small family business
pool of a Father and his daughter in a clean pool
 

Directions

INSTRUCTIONS FOR USE
  1. Brush the pool
  2. Backwash Filter
  3. Disconnect slide and automatic pool cleaner from pool support system
  4. Adjust pH to 7.2 – 7.4 range
  5. Raise chlorine residual to 3 ppm
  6. Wait 15 minutes after adding chlorine
  7. Add ALGAEDYN through skimmer at the rate of 8ox every 10 min. until the recommended dosage is reached. If pool has no skimmer, add ALGAEDYN in front of a return to ensure proper circulation.
  8. Keep filter in operation during treatment and for a minimum of 72 hours after treatment.
  9. For best results, keep filter in operation until condition clears
MAINTENANCE SPANISH
Pool Water Kill Algae (Infested Pools) Weekly Prevention Treatment (Non-Visible Algae)
10,000 gal 1/2 qt. 4 oz.
20,000 gal 1 qt. 8 oz.
Pool Technician using Silver Algaedyn in a commercial setting
 

Testimonials

Slide

Knocks out black algae and did not come back for the rest of the season.

- Marie
October 21, 2024

Slide

Used this on my pool that had black algae. It got rid of it in two days.

- Brian
July 31, 2024

Slide

Had an infested pool with black algae, gook everywhere! Put in half a quart one week, the other half the next week. Killed the black algae.

- David Bonno
Bonnos Pool Service, La Habra, CA

Slide

The best of the best, kills black algae and the algae has not come back since.

- Joseph Byeon
Top Swimming Pool Service, Chine Hills, CA

Slide

Have used Algaedyn for 30 years. It is the best.

- Dave
Aquaman Pool Group

Slide

Silver makes the difference. Great stuff.

- TCP

Slide

Kicks Black Algae’s Ass!

- Jeff Keelly
JK Pools

Slide

Works well. Half a quart for a 10,000 gallon pool. Brush algae, add Algaedyn Repeat 3-4 weeks GONE! Has not come back in 7 months.

- Chad Doering
Innovative Pool Concepts, Inc.

Slide

The best algae remover I’ve ever used. It revived my green pool in a couple of days. 5 stars.

- Dan

Slide

Gets rid of algae in 24 hours and the water does not brown.

- Brandon Peters

Slide

Pour the Algaedyn into the skimmer and let it run for 24 hours, sometimes without scrubbing black algae is gone!

- Lino Ortiz
Pools by Lino

Slide

Always works, learned about it when started in the business, no browning of the water, great for commercial accounts.

- David Raigh
Raigh Pool Services

Slide

Very Good Product. When algae is worst we sell our customers Algaedyn!

- Daniel Berhe
Aqua Swimming Pool Supplies

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Video testimonials
 

F.A.Q.

The pool is safe to swim in immediately after adding Silver Algaedyn. We recommend waiting for the product to fully circulate first for best results.

Knowing the volume of water (in gallons) in your swimming pool is important in all areas of swimming pool maintenance and chemical applications..

The volume of your pool is a calculation of your swimming pool’s dimensions multiplied by your pool’s average depth. The chart linked below is designed to help you estimate the number of gallons in your swimming pool – listed are many of the most common dimensions with their calculated gallons.

ESTIMATE WATER AMOUNTS

It interferes with algae cells’ metabolism, killing existing algae and preventing new growth.

Algaedyn is primarily sold via distributors and local pool supply stores. 

For people that can’t get it locally there is also an option to order direct on our website.

PURCHASE SILVER ALGAEDYN

Yes, Silver  Algaedyn maintains an effective algaecidal level for up to several months.

Yes, Silver Algaedyn is safe to use in saltwater pools. Silver ions are compatible with saltwater systems and won’t interfere with the salt cell or chlorine generation process.

wavy edged, in-ground pool with clean water
MORE F.A.Q. BUY SILVER ALGAEDYN