Green to Clean Pool Service in Hercules, CA

G-Whizz Pool Cleaning specializes in green pool recovery for homeowners across Hercules, Pinole, Concord, Lafayette, Walnut Creek, Pleasant Hill, and Martinez. We kill the algae, clean the filters, balance the water, and get your pool back to crystal clear.

Algae Identification and Assessment

There are multiple types of pool algae including green, yellow, and black algae, and each requires a different treatment approach. We identify what is present before we start treating so we use the right products at the right concentrations.

Shock Treatment

We apply a heavy chlorine shock at the concentration needed to overcome the algae load. The amount depends on the severity of the bloom and the current sanitizer level. We calculate the correct dosage for your pool's volume rather than applying a standard amount.

Filter Cleaning and Backwashing

As algae dies, it must be removed by the filtration system. We clean and backwash your filter during the recovery process to prevent dead algae from cycling back into the water or clogging the filter media.

Vacuuming and Debris Removal

Once the algae is dead, it settles to the pool floor as a fine gray or white sediment. We vacuum this material out of the pool thoroughly so it does not cloud the water or stress the filter during the final stages of recovery.

Full Chemistry Rebalance

Shock treatment temporarily throws off pH, alkalinity, and stabilizer levels. After the algae is cleared, we rebalance all chemical parameters so the water is safe, comfortable, and properly protected against a future bloom.

Post-Recovery Inspection

After the water clears, we inspect the pool surface for algae staining and the equipment for any damage or strain caused by the bloom. If filter media needs replacement or equipment needs attention, we let you know with a written quote before any additional work.

Shock and Algaecide

We use calcium hypochlorite shock for most green pool treatments because of its high available chlorine percentage and fast action. For persistent algae outbreaks, particularly yellow or black algae, we supplement with a copper-based or quat algaecide from the BioGuard professional line. The right combination depends on what type of algae is present and how deeply it has penetrated the pool surface.

Clarifiers and pH Adjusters

After the initial shock cycle, we use a clarifier to help the filter capture fine algae particles that remain suspended in the water. pH is then brought back into range using muriatic acid or sodium carbonate depending on the direction needed. Alkalinity is restored with sodium bicarbonate, and stabilizer levels are adjusted to keep the new chlorine from burning off too quickly in direct sunlight. This full rebalance is what separates a proper recovery from a pool that looks clear but turns green again in a week.

Chemical treatment applied during green pool recovery

We visit the pool in person, evaluate the severity of the algae bloom, check the equipment condition, and test the current water chemistry. This gives us everything we need to plan the recovery correctly.

We then give you a clear written quote covering the full recovery scope before any work begins. You approve it, we start.

We apply the shock treatment at the calculated dosage, brush the walls and floor to break up algae colonies, and clean or backwash the filter to prepare it for the heavy load it is about to handle.

The pump is left running on a full filtration cycle to circulate the treatment and begin removing killed algae from the water.

After the initial treatment has had time to work, we return to assess clarity, vacuum dead algae from the floor, and filter the water further. The filter is cleaned again at this point because it will be heavily loaded.

For severe cases, additional treatment visits may be needed before the water is fully clear.

Once the water is clear, we run a full chemistry panel and restore all levels to normal operating ranges. We confirm the pool is safe for swimming before completing the job.

At this point we also discuss a weekly pool service plan to prevent a recurrence.

Warning Signs Your Pool Needs Green to Clean Pool Service

These conditions mean algae is already active in your water. The sooner treatment starts, the faster and easier the recovery.

• Water has turned visibly green, teal, or murky yellow-green
• You can see algae growing on the walls, steps, or floor of the pool
• Chlorine tabs or shock treatment are disappearing unusually fast
• The pool has not been serviced in several weeks or a pump failure occurred

Additional signs to watch for:

• Slippery or slimy feel on the pool walls or steps
• Strong chemical smell despite recent chlorine additions
• Filter running but water clarity is not improving
• Dark spots on the pool floor that do not brush away easily
• Pump basket filling unusually fast with fine green debris

Why DIY Often Makes It Worse

The most common DIY mistake is adding more shock without understanding why the pool turned green in the first place. If the filter is clogged, the pump is failing, or the stabilizer level is too high, adding chemicals without addressing those root causes wastes product and delays recovery. We assess the full system before we treat so the chemicals we apply are actually effective.

Another common issue is over-shocking a pool with a plaster surface, which can cause etching or discoloration. We give a free written quote after seeing your situation, and we calculate dosages based on your pool's actual volume and current readings, not a general estimate.

What Comes After Recovery

Once your pool is clear, the most important step is preventing the same situation from recurring. A consistent weekly pool cleaning service keeps sanitizer levels stable and catches equipment issues before they cause a breakdown. If an equipment failure was the root cause of your green pool, our team also handles pool equipment repair so the underlying problem is fully addressed.

How long does green pool recovery take?

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