SeaKlear 90336SKR Phosphate Remover is a high-strength, 1-gallon liquid treatment designed for residential and commercial pools experiencing elevated phosphate levels. Using a lanthanum-based formula, this product can remove up to 9,000 ppb of orthophosphates per 10,000 gallons in a single application, making it ideal for high-phosphate loads from fertilizer runoff, heavy bather load or salt chlorination systems. The bottle is sized for large treatment cycles while being safe for use on all pool finishes and with any sanitizer system. For ongoing maintenance, the dosage guideline is typically 1 oz per 5,000 gallons to keep phosphate levels under 125 ppb. Proper use helps restore water clarity, improve sanitizer efficiency and reduce algae-growth risk in your pool system.
Highlights
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Commercial-Grade Concentration: Capable of eliminating up to 9,000 ppb of phosphates in 10,000 gallons with a single dose, making it suited for heavy contamination or professional service use.
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Maintenance Dose Simplicity: Once the phosphate level is reduced, ongoing dosing is only 1 oz per 5,000 gallons to maintain acceptable levels and protect your system from phosphate-driven issues.
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Enhances System Efficiency: By removing phosphates that drain sanitizer strength and cloud water, this product supports clearer water, fewer algae outbreaks and improved heater or salt-system performance.
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Safe for All Pools: Compatible with chlorine, salt, mineral and UV sanitation systems and safe on plaster, vinyl and fiberglass surfaces when used according to instructions.
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Large-Capacity Bottle: The 1-gallon size allows treatment of large pools or multiple systems, making it a high-value option for service professionals or pool owners with large volumes.
Instructions
Initial Treatment for High Phosphate Levels
Start by cleaning or backwashing your filter. Use the dosage chart below to determine how much product to add. Pour the Phosphate Remover evenly across the pool surface instead of concentrating it in one area. Keep the filtration system running continuously for at least 24 hours. If the filter pressure rises more than 10 psi above its normal level, clean or backwash the filter again. After 48 hours, test with a pool-approved phosphate test kit and apply another dose if needed.
Weekly Maintenance
Use 1 ounce of Phosphate Remover per 5,000 gallons of water each week to help keep phosphate levels below 125 ppb.
Dosage Guide
| Phosphate Level (ppb) | 5,000 Gallon Pool | 10,000 Gallon Pool |
|---|---|---|
| 250 | ½ oz | 1 oz |
| 500 | 1 oz | 2 oz |
| 1,000 | 2 oz | 4 oz |
| 3,000 | 6 oz | 12 oz |
| 4,500 | 8 oz | 16 oz |
| 9,000 | 16 oz | 32 oz |
Important Notes
Some cloudiness is normal during treatment—this means the product is binding and removing phosphates. The water may remain hazy for up to 48 hours depending on phosphate levels and filter performance. Swimming should be avoided until the water clears. If needed, you can speed up the process by using SeaKlear Chitosan Clarifier at 2 oz per 5,000 gallons.
Additional Info
This section answers the most common in-store questions about SeaKlear 90336SKR Phosphate Remover. It explains how to confirm dosage, what to expect during treatment, and how this professional-strength formula performs in pools with high phosphate levels. Review these details before visiting Discount Pool Mart for pickup.
Determining Treatment Need, Dosage & Product Strength
SeaKlear 90336SKR is capable of removing up to 9,000 ppb of phosphates per 10,000 gallons in a single application, making it ideal for severe phosphate spikes or large pools. These questions help confirm the correct use before coming into the store.
How do I know if I need the high-strength 1-gallon 90336SKR formula?
If phosphate test readings exceed 1,000–2,000 ppb or algae keeps returning, this high-capacity version is recommended. Customers often bring water samples to DPM for accurate testing.
Can I use this product for extreme phosphate loads from runoff or storm debris?
Yes — the gallon size is designed for major contamination events, fertilizer runoff, or long-neglected water.
Will this product work with my current sanitizer system?
Yes — it is safe for chlorine, salt, mineral and UV systems and does not interfere with sanitizer output.
How the Product Works, Filter Behavior & Water Appearance
These answers help explain what happens after adding the lanthanum-based formula.
Will the pool cloud after adding 90336SKR?
A temporary haze is normal as phosphates bind and fall out for filtration. Running the pump continuously speeds recovery.
How should I add the high-strength formula to avoid overloading the filter?
Pour slowly around the pool perimeter while the pump is running. Avoid adding directly into the skimmer, especially on cartridge systems.
How long does it take to see improvement?
Water clarity typically improves within 24–48 hours depending on phosphate level and filter performance.
In-Store Pickup, Water Testing & Follow-Up Care
These answers help plan an efficient trip to Discount Pool Mart.
Is 90336SKR usually available for same-day pickup?
DPM locations stock the gallon size regularly during algae season. Calling ahead with the SKU ensures availability.
Should I bring a water sample to confirm dosage?
Yes — on-site testing helps determine the exact amount needed for your pool volume and phosphate level.
Should I clean or replace filters after treatment?
Because phosphate removal increases filter load, cleaning or replacing worn cartridges may help restore clarity faster.
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