Green Pools

Green Pools: Causes and How to Fix Them Fast

There’s nothing more disappointing than walking out to your backyard oasis and seeing a green, murky pool. In St Pete, FL, the hot and humid climate makes pools particularly susceptible to algae growth. And let’s face it—nobody wants to swim in water that looks more like a swamp than a pool. But don’t worry—a green pool can be fixed with the right steps. Let’s break down why pools turn green and how to get them back to blue fast.

Common Causes of Green Pools

1. Imbalanced Pool Chemistry

Chlorine is your pool’s best defense against algae, but Florida’s intense sun can cause chlorine to evaporate quickly. If chlorine levels drop too low, algae can take over in no time. pH and alkalinity imbalances also contribute to algae growth. Florida’s regular rain showers can also dilute chemicals, making it even harder to maintain balance. Regular testing and adjustments are crucial, especially in the summer months when algae thrive.

2. Poor Circulation

Your pool’s pump and filter work together to circulate chemicals and filter out contaminants. If the equipment isn’t running efficiently or the filter is clogged, algae can grow even if your chemicals are balanced. Weak water flow, clogged baskets, or an old, inefficient pump can all contribute to poor circulation. If you notice water jets losing pressure or stagnant spots in the pool, it’s time to investigate.

3. Debris and Organic Material

Leaves, dirt, and other debris introduce nutrients that algae feed on. In Florida, where afternoon storms are common, pools often collect debris that encourages algae growth if not removed quickly. Debris that sits for even a day or two can kickstart an algae bloom, especially if the pool isn’t regularly skimmed and vacuumed.

How to Fix a Green Pool Fast

Step 1: Test and Adjust Chemicals

Use a reliable pool test kit to check chlorine, pH, and alkalinity. For a green pool, chlorine levels need a big boost—this process is called “shocking” the pool. Shocking involves adding a high dose of chlorine to kill the algae. Make sure to test again after 24 hours to see if additional shock treatments are needed.

Step 2: Brush and Vacuum the Pool

Algae clings to walls, steps, and hard-to-reach corners. Brushing every surface, especially along the waterline and behind ladders, helps break algae loose so the chlorine can kill it more effectively. After brushing, vacuum the pool to remove debris and dead algae. A manual vacuum works best for severe algae blooms, as automatic cleaners might just stir the algae around.

Step 3: Run the Filter Continuously

Your pool’s filter is your best ally when battling algae. Run the filter 24/7 until the pool clears up. Clean or backwash the filter frequently during this process, as it will clog quickly with algae. For severe cases, you may need to replace the filter media if it becomes too saturated.

Let Clear Tech Pools Handle the Algae

Need help restoring your pool to its crystal-clear glory? Call Clear Tech Pools at 727-339-0102 for reliable pool maintenance in St Pete, FL. We’ll handle the algae while you get back to enjoying your pool—just the way it should be.

This post was written by a professional at Clear Tech Pools. Clear Tech Pool is a team of expert  pool maintenance Brandon FL. Our company was founded by local residents on the principles of hard work, exceptional customer service and a focused attitude. It is these qualities, along with our outstanding performance that keeps our customers satisfied. We have built, renovated and serviced thousands of pools in the area, and we have a long list of references available for all of our services upon request. Our staff of professional technicians have extensive training for fast and efficient service. We maintain our excellent reputation for quality by maintaining friendly relationships with our customers.