North CountyAlgae Treatment

Green Pool Cleanup & Algae Removal Service for Every Color of Bloom

Nobody buys a pool to look at a pond. If the water has gone green, the steps feel slick, or there's a yellow film in the shaded corner that comes back every week, the problem is biological, not cosmetic, and dumping shock on it rarely finishes the job. Next Level clears algae the way it has to be cleared: test the water first, fix the chemistry that let it grow, brush it off every surface, filter it out, and come back until it's gone.

We treat green algae, yellow and mustard algae, and the stubborn black algae that roots into plaster, across Vista, Oceanside, Carlsbad, San Marcos and Escondido. You get a photo after every visit so you can watch it turn.

What Causes Algae in North County Pools

Algae needs three things: nutrients, light and a lapse in sanitizer. North County gives it all three. Dust and pollen feed it, the sun warms it, and one hot week with low chlorine lets it bloom. The most common reason we see is simply that life got busy and the pool went a few weeks without steady chemistry. That's where a weekly service earns its keep. We handle these treatments:

• Green algae (free-floating, turns the whole pool cloudy green)
• Yellow and mustard algae (dusty film on shaded walls and steps)
• Black algae (dark spots rooted in plaster and grout)
• Pink slime and white water mold (bacteria that look like algae and need a different approach)

What Causes Pool Algae, and What Actually Clears It?

• Chemistry. Chlorine only works in a narrow pH range. Above 7.8 it's sluggish; below 7.2 it burns off. We hold pH between 7.2 and 7.6 and keep free chlorine where it needs to be for the water temperature. Pools on one of our weekly plans almost never go green, because the readings never get the chance to drift.
• Stabilizer. This is the one most people miss. Years of chlorine tablets push cyanuric acid past 100 ppm, and at that point chlorine is locked up and shocking does nothing. If your stabilizer is over 100, the fix is a partial drain or a reverse osmosis treatment, not more chemicals. We test for it first.
• Filtration. A filter that's 10 psi over its clean baseline isn't pulling algae out of the water. We check pressure on every visit and clean the filter when the gauge says so, not the calendar.
• Turnover. The entire pool volume needs to pass through the filter at least once a day. Short pump run times are the quiet cause of a lot of green pools.
• Organics. Leaves, soil and fertilizer feed algae. Baskets emptied weekly, walls and corners brushed, and a cover or cleaner for tree-heavy yards take the food away.

How We Take a Pool From Green to Clean

1. Test everything: chlorine, pH, alkalinity, calcium, stabilizer, salt and phosphates.
2. Correct the chemistry that caused it, including a drain or RO if stabilizer is the culprit.
3. Brush every surface, because algae you can't float can't be killed.
4. Treat, filter, and clean the filter as it loads up.
5. Return every day or two until the water is clear, with a photo after each visit.

Most pools clear in three to five visits. We'll tell you up front how many we expect for yours.

Get a Green Pool Cleanup Quote From a Photo

Send us a photo of the pool and your address and we'll quote the cleanup today. Once it's clear, a weekly plan keeps it that way; your first four weekly visits are free. Call or text (760) 330-4465.