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Keep your water crystal clear with Doheny’s professional-grade pool algaecide. Whether you are dealing with a sudden bloom or looking for the best pool algaecide for weekly prevention, we have a formula designed for your specific pool type. From copper-based killers to non-foaming preventers (algaestats), we make pool algae control simple and affordable.
| Product | Primary Function | Best For |
|---|---|---|
| Super Algaecide Plus | Heavy-Duty Killer | Black, Green, & Mustard Algae |
| Total Algaecide | Long-Term Killer | 90-Day Protection; All Algae Types |
| Algaecide 60 | Concentrated Preventer | Weekly Maintenance (Non-Foaming) |
| Doheny's Algaecide | Economical Algaestat | General Green Algae Prevention |
1. When is the best time to add algaecide during my spring pool opening?
For the best results, add your pool algaecide after you have vacuumed the pool, balanced the water chemistry (pH and Alkalinity), and shocked the water. Wait until the chlorine level has dropped to around 3.0 ppm before adding the algaecide to ensure the chlorine doesn't break down the active ingredients too quickly.
2. What is the difference between an algaecide and an algaestat?
An algaecide (like our Super Algaecide Plus) is designed to kill existing algae blooms. An algaestat (like Doheny’s Algaecide 60) is a preventative formula designed to stop algae from forming in the first place. For spring start-ups, using a high-quality algaestat is the best way to prevent the water from turning green as temperatures rise.
3. Why should I use a non-foaming algaecide?
Non-foaming formulas, such as Algaecide 60, are ideal for pools with water features, fountains, or attached spas. Standard algaecides can cause bubbling or "suds" when agitated by air, whereas non-foaming versions provide maximum protection without the mess.
4. Will pool algaecide stain my pool liner?
While some copper-based algaecides can cause staining if used improperly, Doheny’s professional formulas are designed to be safe for all pool types. If you are concerned about metal content, look for "copper-free" or chelated formulas which provide powerful algae control without the risk of surface discoloration.
5. How long do I have to wait to swim after adding algaecide?
Most pool algaecides are safe to swim in about 15 to 30 minutes after application, provided the chemical has had time to circulate throughout the water. Always check the specific label on your Doheny’s product for the most accurate safety window.
Algae is a common problem for all pool owners - the spores can be carried by the wind, rain, or even contaminated swimsuits and pool cleaning tools. An algae bloom will occur within just a few hours if conditions are right. Luckily, our Pool Pros have come up with a guide on how to fight off and prevent all types of algae!