About Us

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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.


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

Directions
It is a violation of Federal Law to use this product in a manner incosistent with its labeling
INSTRUCTIONS FOR USE
- Brush the pool
- Backwash Filter
- Disconnect slide and automatic pool cleaner from pool support system
- Adjust pH to 7.2 – 7.4 range
- Raise chlorine residual to 3 ppm
- Wait 15 minutes after adding chlorine
- 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.
- Keep filter in operation during treatment and for a minimum of 72 hours after treatment.
- For best results, keep filter in operation until condition clears
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. |

Weekly Maintenance
- Clean Tile on Pool
- Backwash Filter
- Disconnect slide and automatic pool cleaner from pool support system
- Adjust pH to 7.2 – 7.4 range
- Raise chlorine residual to 3 ppm
- Wait 15 minutes after adding chlorine
- Add ALGAEDYN at the rate of 4 oz. every 10 minutes until the recommended dosage of 4 oz. ALGAEDYN per 10,000 gallons of pool water is reached. If the pool has no skimmer, add ALGAEDYN below water level in front of return at the same rate.
- Keep the filter in operation during treatment and for a minimum of 72 hours after treatment.
INSTRUCCIONES
PARA ELIMINAR EL CRECIMIENTO DE ALGAS:
- Cepille las baldosas y las paredes de la piscina con un cepillo de alambre
- Desconecte el tobogán y el limpiador automático de piscinas del sistema de soporte de la piscina
- Ajuste el pH del agua de la piscina al rango de 7.2-7.4
- Eleve el residual de cloro a 3 ppm
- Espere 15 minutos después de añadir cualquier cloro al agua de la piscina
- Añada ALGAEDYN a través del skimmer a una tasa de 8 oz cada 10 minutos hasta alcanzar la dosis recomendada de 16 oz de ALGAEDYN por cada 10,000 galones de agua de piscina Si la piscina no tiene skimmer, añada ALGAEDYN por debajo del nivel del agua frente al retorno a la misma tasa.
- Mantenga el filtro en funcionamiento durante el tratamiento y por 72 horas adicionales después del tratamiento
- Para mejores resultados, mantenga el filtro en funcionamiento hasta que la condición se aclare
- Lave a contracorriente el filtro
PARA PREVENIR EL CRECIMIENTO DE ALGAS, SIGA UNA APLICACIÓN DE MANTENIMIENTO SEMANAL:
- Cepille las baldosas y las paredes de la piscina
- Lave a contracorriente el filtro
- Desconecte el tobogán y el limpiador automático de piscinas del sistema de soporte de la piscina
- Ajuste el pH al rango de 7.2-7.4
- Eleve el residual de cloro a 3 ppm
- Espere 15 minutos después de añadir cloro
- Añada ALGAEDYN a una tasa de 4 oz cada 10 minutos hasta alcanzar la dosis recomendada de 4 oz de ALGAEDYN por cada 10,000 galones de agua de piscina. Si la piscina no tiene skimmer, añada ALGAEDYN por debajo del nivel del agua frente al retorno a la misma tasa
- Mantenga el filtro en funcionamiento durante el tratamiento y por un mínimo de 72 horas después del tratamiento
HOW TO DETERMINE THE AMOUNT OF WATER IN YOUR POOL
The volume of your pool is a calculation of your swimming pool’s dimensions multiplied by your pool’s average depth. The following chart is designed to help you estimate the number of gallons in your swimming pool.
We have listed below many of the most common dimensions with their calculated gallons.
Average Depth = depth at the deep end + the depth at the shallow end / 2.
Rectangular Pools = Multiply length x width x average depth x 7.5 = gallons
Round Pools = Multiply diameter x diameter x average depth x 5.9 = gallons
Oval Pools = Multiply full width x full length x average depth x 6.7 = gallons
* Irregular shapes and size pools capacity should be determined by your pool builder or specialist.
* If your pool has sloping sides, multiply your final figure of gallons by 0.85 for correct gallons.
Common Pool Sizes and Its Capacity In Gallons
Inground Pools (Average Depth 5 Feet)
Pool Size | US Gallons |
---|---|
12 ft x 24 ft | 10,800 |
14 ft x 28 ft | 14,700 |
15 ft x 30 ft | 16,875 |
16 ft x 32 ft | 19,200 |
16 ft x 34 ft | 20,400 |
16 ft x 36 ft | 21,600 |
18 ft x 36 ft | 24,300 |
20 ft x 40 ft | 30,000 |
20 ft x 44 ft | 33,000 |
24 ft x 44 ft | 39,600 |
Above Ground Pools (4 feet deep)
Pool Size | US Gallons |
---|---|
12 ft. Rnd | 3,200 |
15 ft. Rnd | 5,310 |
18 ft. Rnd | 7,646 |
21 ft. Rnd | 10,407 |
24 ft. Rnd | 13,593 |
27 ft. Rnd | 17,204 |
28 ft. Rnd | 18,502 |
30 ft. Rnd | 21,240 |
12 ft x 24 ft Oval | 6,400 |
15 ft x 24 ft Oval | 8,000 |
15 ft x 30 ft Oval | 10,000 |
18 ft x 33 ft Oval | 13,000 |
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.
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.
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.
