
United Chemical Swamp Treat SWAM-C12 is a powerful algae eliminator designed for severe algae blooms (swamp conditions). Add 1 bag per 10,000 gallons for treatment, brush pool vigorously, run pump 24 hours, clean filter frequently. Works quickly to clear severe green algae. This guide covers complete application procedures and best practices for swamp pool treatment.
Table of Contents
What is United Chemical Swamp Treat SWAM-C12?
United Chemical Swamp Treat SWAM-C12 is a specialized algae eliminator designed specifically for severe algae blooms, commonly called swamp conditions. This powerful treatment works quickly to clear pools that have turned completely green from heavy algae growth. Swamp Treat is formulated to handle the most extreme algae situations where standard algaecides and shock treatments have failed or are insufficient.
Key Features of Swamp Treat SWAM-C12
- Specialized formula: Designed for severe algae blooms
- Fast acting: Clears swamp conditions quickly
- Powerful treatment: Handles extreme algae situations
- Easy to use: Simple bag application
- Works with shock: Use alongside pool shock for best results
- Safe for all surfaces: Compatible with vinyl, fiberglass, plaster, and tile
- Professional strength: Used by pool service professionals
- Complete treatment: One bag treats 10,000 gallons
How Swamp Treat Differs from Regular Algaecides
Unlike preventative algaecides used for weekly maintenance or standard algae treatments, Swamp Treat is specifically formulated for extreme algae blooms where the pool has turned completely green and visibility is zero. Its concentrated formula provides the power needed to clear severe swamp conditions that would require multiple treatments with standard products.
Why Use Swamp Treat for Severe Algae?
Benefits of Specialized Swamp Treatment
- Clears severe algae blooms quickly
- Handles extreme swamp conditions
- Works faster than multiple standard treatments
- Simplifies treatment of heavily neglected pools
- Cost effective for severe situations
- Easy to apply
- Works with all sanitizers
- Helps prevent algae recurrence when used properly
Understanding Swamp Conditions
Swamp conditions occur when pools are severely neglected, allowing algae to bloom unchecked. The water turns completely green, visibility is zero, and the pool may have a swamp-like appearance. This typically happens after extended periods without proper maintenance, after storms, or when pools are left unattended. Swamp Treat is specifically designed to handle these extreme situations.
When to Use Swamp Treat
Ideal Situations for Swamp Treat
Severe Algae Blooms:
- Pool water is completely green
- Zero visibility in pool
- Heavy algae growth throughout
- Pool has swamp-like appearance
- Standard treatments have failed
For general green algae, see how to fix green pool quickly.
Neglected Pools:
- Pool left unattended for weeks or months
- After extended vacancy
- Following major storms
- When pool maintenance was abandoned
Pool Opening with Heavy Algae:
- Spring opening reveals severe algae
- Pool not properly winterized
- Cover failed during winter
- Extreme algae growth over winter
Step by Step Application Guide
Step 1: Assess Pool Condition
Before treating, evaluate the situation:
- Determine severity of algae bloom
- Check if pool is truly in swamp condition
- Verify equipment is functioning
- Ensure pump and filter are operational
- Remove large debris if possible
Step 2: Test and Balance Water Chemistry
Test what you can and adjust:
- pH: 7.2 to 7.6 (lower end is better for algae treatment)
- Total Alkalinity: 80 to 120 ppm
- Free Chlorine: Likely 0 in swamp condition
- Calcium Hardness: 200 to 400 ppm
Learn about how to maintain your pool's pH balance, how to manage pool water hardness, and how solar ionizers support balanced pool water.
Step 3: Calculate Pool Volume
Accurate dosage depends on knowing your pool's water volume:
Rectangular Pools:
Length (ft) × Width (ft) × Average Depth (ft) × 7.5 = Gallons
Round Pools:
Diameter (ft) × Diameter (ft) × Average Depth (ft) × 5.9 = Gallons
Oval Pools:
Length (ft) × Width (ft) × Average Depth (ft) × 6.7 = Gallons
Step 4: Determine Swamp Treat Dosage
United Chemical Swamp Treat SWAM-C12 dosage guidelines:
Standard Treatment Dosage
1 bag per 10,000 gallons
Dosage Examples:
- 10,000 gallon pool: 1 bag
- 15,000 gallon pool: 1.5 bags
- 20,000 gallon pool: 2 bags
- 25,000 gallon pool: 2.5 bags
- 30,000 gallon pool: 3 bags
Extreme Swamp Conditions
For very severe conditions, may need to repeat treatment after 24 hours if algae remains.
Step 5: Shock Pool First
Critical step for swamp treatment:
- Shock pool with calcium hypochlorite or liquid chlorine
- Use 3 to 5 lbs shock per 10,000 gallons
- For severe swamp conditions, use triple shock dose
- Add shock in evening for best results
- Allow shock to circulate for 1 to 2 hours
Step 6: Add Swamp Treat to Pool
Apply product after shocking:
- Open Swamp Treat bag(s)
- Pour contents slowly around pool perimeter
- Walk around entire pool while pouring
- Distribute evenly for best results
- Pour near return jets for better mixing
- Do not add directly to skimmer
Step 7: Brush Pool Vigorously
Essential step for algae removal:
- Brush entire pool surface thoroughly
- Brush walls from top to bottom
- Brush floor in overlapping strokes
- Brush steps, corners, and crevices
- Brush behind ladders and fittings
- Continue brushing for 15 to 20 minutes
- Repeat brushing every 12 hours
Use the best pool brushes for effective algae removal.
Step 8: Run Pump Continuously
Ensure proper circulation during treatment:
- Run pump continuously for 24 to 48 hours
- Do not turn off pump during treatment
- Allows chemicals to circulate throughout pool
- Filters out dead algae
- Monitor filter pressure closely
Learn about how pool circulation supports proper maintenance.
Step 9: Clean Filter Frequently
Critical for removing dead algae:
- Clean or backwash filter when pressure rises 8 to 10 PSI
- May need to clean filter 5 to 10 times during treatment
- Backwash sand or DE filters thoroughly
- Clean cartridge filters with hose
- Continue until water runs clear
- Expect heavy filter loading with swamp treatment
Step 10: Vacuum Pool
Remove dead algae from pool:
- After 24 to 48 hours, vacuum pool thoroughly
- Vacuum to waste if possible (essential for swamp conditions)
- If vacuuming to filter, clean filter immediately after
- Remove all visible algae debris
- Refill pool to proper level if vacuumed to waste
- May need to vacuum multiple times
Post Treatment Maintenance
Immediate Follow Up (First Week)
Daily Tasks:
- Test chlorine levels (maintain 3 to 5 ppm)
- Test pH and adjust to 7.2 to 7.6
- Brush pool surfaces daily
- Run pump 24 hours daily
- Monitor water clarity
- Clean filter as pressure rises (frequently)
- Vacuum as needed
After 48 Hours:
- Vacuum pool again thoroughly
- Test all water chemistry parameters
- Add preventative algaecide
- Continue elevated chlorine (3 to 5 ppm)
- Water should be clearing significantly
Follow a comprehensive pool cleaning checklist for beginners and weekly pool cleaning routines for clear water.
Ongoing Prevention
Weekly Maintenance:
- Test water chemistry 2 to 3 times per week
- Maintain proper chlorine levels (1 to 3 ppm)
- Add weekly preventative algaecide
- Brush pool surfaces weekly
- Vacuum pool weekly
- Clean filter monthly
- Never let pool reach swamp condition again
For ongoing algae prevention, see how to use preventative algaecides and how to use Pool RX algaecide.
Pro Tips for Maximum Effectiveness
Expert Tips from Pool Professionals
- Shock first: Always shock pool heavily before adding Swamp Treat
- Brush vigorously: Brushing is critical for swamp treatment
- Run pump continuously: 24 to 48 hours minimum, possibly longer
- Clean filter frequently: Expect to clean 5 to 10 times or more
- Vacuum to waste: Essential for removing massive amounts of dead algae
- Maintain high chlorine: Keep 3 to 5 ppm during treatment
- Be patient: Swamp treatment takes 3 to 7 days for complete clearing
- Prevent recurrence: Establish proper maintenance routine immediately
- Remove debris: Clear leaves and debris before or during treatment
- Practice eco-friendly methods: Learn eco-friendly pool cleaning practices
Avoid Common Mistakes
- Not shocking first: Swamp Treat works best with heavy shock
- Insufficient brushing: Must brush vigorously and frequently
- Turning off pump: Needs continuous circulation
- Not cleaning filter enough: Filter will clog repeatedly
- Vacuuming to filter: Vacuum to waste for swamp conditions
- Swimming too soon: Wait until chlorine drops and water clears
- Stopping treatment early: Complete full treatment process
- Not maintaining prevention: Pool will return to swamp without maintenance
Maximizing Swamp Treat Effectiveness
Water Chemistry: Maintain pH at lower end (7.2 to 7.4) during treatment for maximum chlorine effectiveness.
Brushing: Brush pool surfaces every 12 hours during treatment to dislodge algae and expose it to chemicals.
Filtration: Run pump continuously and clean filter frequently to remove massive amounts of dead algae.
Prevention: Establish proper maintenance routine immediately to prevent pool from returning to swamp condition.
Troubleshooting Common Issues
Problem: Water Still Green After 48 Hours
Solutions:
- Shock pool again with triple dose
- Add second treatment of Swamp Treat if needed
- Brush pool vigorously
- Clean filter thoroughly and frequently
- Run pump continuously for another 24 hours
- Test and balance pH to 7.2 to 7.4
- Verify chlorine is at 3 to 5 ppm
- Vacuum to waste to remove dead algae
Problem: Filter Clogs Constantly
Solutions:
- This is normal during swamp treatment
- Clean filter every 6 to 12 hours or as needed
- Backwash thoroughly if sand or DE filter
- Use filter cleaner for deep cleaning
- Vacuum to waste instead of through filter
- Continue until algae is removed
- Consider replacing filter media if very old
Problem: Water Cloudy But Green Color Gone
Solutions:
- Continue running pump 24 hours
- Clean filter multiple times
- Add clarifier to help filter capture particles
- Vacuum pool to remove debris
- Test and balance all water chemistry
- May take 5 to 7 days for complete clarity
See how to handle cloudy water in swimming pools and learn about how to use pool clarifiers.
Problem: Algae Returns After Treatment
Solutions:
- Verify chlorine is maintained at 1 to 3 ppm
- Add weekly preventative algaecide
- Test and balance pH to 7.2 to 7.6
- Brush pool weekly
- Clean filter monthly
- Establish consistent maintenance routine
- Consider adding solar ionizer for prevention
- Never let pool go unattended again
Frequently Asked Questions
How much Swamp Treat should I use?
Use 1 bag per 10,000 gallons for standard swamp treatment. For a 20,000 gallon pool, use 2 bags. For extreme conditions, you may need to repeat treatment after 24 hours.
How long does it take Swamp Treat to work?
Swamp Treat typically shows significant improvement within 24 to 48 hours when used with shock and proper brushing. Complete clearing may take 3 to 7 days depending on severity.
Do I need to shock my pool when using Swamp Treat?
Yes! Shocking is essential for Swamp Treat to work effectively. Shock pool heavily first (triple dose), then add Swamp Treat. The combination is necessary to clear swamp conditions.
Can I swim after adding Swamp Treat?
Wait until chlorine levels drop below 5 ppm and water is clear before swimming, typically 3 to 7 days after treatment. Test chlorine before swimming.
How often should I clean my filter during treatment?
Clean or backwash your filter when pressure rises 8 to 10 PSI above normal. During swamp treatment, expect to clean filter 5 to 10 times or more as it captures massive amounts of dead algae.
Should I vacuum to waste or through the filter?
Always vacuum to waste when treating swamp conditions. This removes dead algae from the pool completely instead of sending it through the filter. Refill pool to proper level after vacuuming to waste.
Can I use Swamp Treat for prevention?
No. Swamp Treat is a treatment product for severe algae blooms, not a preventative. For prevention, use weekly maintenance algaecides and proper pool care.
Can I use Swamp Treat in a saltwater pool?
Yes! Swamp Treat is compatible with all pool types including saltwater, chlorine, bromine, and mineral systems.
Learn about cleaning and maintaining saltwater pools.
Why is my pool still cloudy after the green is gone?
Cloudiness after algae is killed is normal. Dead algae particles and debris remain in the water. Continue running pump, clean filter frequently, add clarifier, and vacuum. Complete clarity takes 5 to 7 days.
How do I prevent my pool from becoming a swamp again?
Establish a consistent maintenance routine: test water 2 to 3 times weekly, maintain proper chlorine (1 to 3 ppm), add weekly algaecide, brush and vacuum weekly, clean filter monthly. Never abandon pool maintenance.
Can I use Swamp Treat with a solar pool ionizer?
Yes! Swamp Treat clears existing severe algae while solar pool ionizers prevent future algae growth. Use Swamp Treat for treatment, then add a solar ionizer for ongoing prevention.
Explore what does a pool ionizer do, what is solar pool ionizer, how to choose solar pool ionizer, pool ionizer pros and cons, and the advantages of solar pool ionizers for residential pools.
Conclusion
United Chemical Swamp Treat SWAM-C12 provides specialized treatment for severe algae blooms and swamp pool conditions. By following proper application procedures (shock heavily first, add Swamp Treat, brush vigorously, run pump continuously, clean filter frequently, vacuum to waste), you can clear even the most extreme algae situations within 3 to 7 days. Complete the full treatment process, establish proper maintenance routine immediately, and never let your pool reach swamp condition again.
For long term algae prevention that reduces the need for extreme treatments like Swamp Treat, consider adding a solar pool ionizer which uses solar power to release copper and silver ions continuously, reducing chlorine needs by up to 85% while providing season long algae and bacteria prevention that helps keep your pool clear and prevents the severe algae blooms that require Swamp Treat treatment.

