At Merman Swimming Pools, we often say the best pool is a circulating pool—and that’s especially true when it comes to keeping algae away. Two of the most important factors in maintaining a clean, healthy swimming pool are proper water flow and consistent chlorine levels. Let’s take a closer look at why they matter and how you can tell if something’s off.
💧 Good Flow = Clean Pool
Water flow is what helps distribute chlorine throughout the pool, allowing it to reach all corners and surfaces to do its job. Without it, even a properly chlorinated pool can start to develop algae—especially in warmer weather.
How to check for a flow issue:
If you suspect your water isn’t circulating well (perhaps your pool looks cloudy or you’re starting to see green), you can run a quick test by switching your filter to recirculate. In this setting, water bypasses the filter and goes straight back into the pool. If the return jets feel much stronger in this mode, there’s likely a flow restriction in your filter or plumbing that needs attention.
🧪 Chlorine Is Still King—Even in Salt Pools
One common myth we hear is that saltwater pools don’t need chlorine. The truth is, salt pools are still chlorine pools—they just generate it differently. Salt systems convert salt in the water into liquid chlorine via a process called electrolysis.
To produce enough chlorine to sanitize your pool and prevent algae, your saltwater system needs to run at least 12 hours per day. That’s because 12 hours of runtime typically generates about half a gallon of liquid chlorine—just enough to keep most residential pools clean under normal conditions.
🟢 Preventing Algae = Balanced System
When you combine good flow and steady chlorine levels, algae doesn’t stand a chance. Here are a few quick tips:
- Run your pump long enough to turn the entire volume of the pool at least once daily.
- Clean your filter regularly to avoid clogs that restrict flow.
- Check your chlorine levels weekly (even salt pools need regular monitoring).
- Watch for early signs of algae like slick surfaces, greenish tint, or cloudy water—and act fast!
💥 Ready to Take Control of Your Pool?
If your pool isn’t staying clean—or if you’re just tired of guessing what’s wrong—let the experts at Merman Swimming Pools take the guesswork out of it. Whether it’s a flow issue, a chlorine imbalance, or stubborn algae, our experienced team is ready to help.
👉 Click here to schedule a service visit or call us today at 215‑385‑1350.
Don’t wait until algae takes over — your best pool season starts with proper flow and chlorine!
