Durabasics Pool Stabilizer Guide



Durabasics 
Liquid Pool Stabilizer & Conditioner

Durabasics Liquid Pool Stabilizer & Conditioner is designed to help raise and maintain recommended CYA levels in outdoor swimming pools.
Suitable for chlorine pools and saltwater pools.
Proper cyanuric acid levels help reduce chlorine loss from sunlight exposure and support chlorine stability during routine pool maintenance.

1 Test Your Pool

Test your current CYA level first (always)

Use a CYA test strip or liquid test kit before adding anything. Follow test kit instructions for accurate results, then compare to the color chart. Testing first is recommended to help avoid over-treatment — adding too much CYA is very difficult to fix and requires draining water.

💡 One gallon (128 oz) will raise a 10,000 gallon pool's stabilizer concentration 32 ppm.

CYA level guide — chlorine pools vs. saltwater pools

Liquid or Tablet Chlorine
Chlorine Pools
Ideal target: 30–50 ppm
⚠️ 0–29 ppmToo low — add now
✅ 30–50 ppmIdeal — no action
⚠️ 51–80 ppmMonitor
⚠️ 81–100 ppmHigh — monitor closely
⚠️ 100+ ppmToo high — partial drain
Salt Chlorine Generator
Saltwater Pools
Ideal target: 60–80 ppm
⚠️ 0–49 ppmToo low — add now
⚠️ 50–59 ppmSlightly low — consider adding
✅ 60–80 ppmIdeal — no action
⚠️ 81–100 ppmHigh — monitor
⚠️ 100+ ppmToo high — partial drain
Too low / Too high — action required
Slightly low or elevated — watch closely
Ideal — no action needed
2 Find Your Dose

Recommended dosage chart

Find your pool size → find how many ppm you need to raise → read the oz amount

Pool size Raise +10 ppm Raise +20 ppm Raise +30 ppm Raise +40 ppm
5,000 galSmall above ground 20 oz0.16 gal 40 oz0.31 gal 60 oz0.47 gal 80 oz0.63 gal
10,000 galMedium above ground 40 oz0.31 gal 80 oz0.63 gal 120 oz0.94 gal 160 oz1.25 gal
15,000 galSmall inground 60 oz0.47 gal 120 oz0.94 gal 180 oz1.41 gal 240 oz1.88 gal
20,000 galMedium inground 80 oz0.63 gal 160 oz1.25 gal 240 oz1.88 gal 320 oz2.50 gal
25,000 galLarge inground 100 oz0.78 gal 200 oz1.56 gal 300 oz2.34 gal 400 oz3.13 gal
30,000 galLarge+ inground 120 oz0.94 gal 240 oz1.88 gal 360 oz2.81 gal 480 oz3.75 gal
35,000 galXL inground 140 oz1.09 gal 280 oz2.19 gal 420 oz3.28 gal 560 oz4.38 gal
40,000 galResort / commercial 160 oz1.25 gal 320 oz2.50 gal 480 oz3.75 gal 640 oz5.00 gal

For best control, add in 2 portions 24 hours apart, especially for larger adjustments. Retest after each addition. CYA does not reduce on its own quickly — lowering levels typically requires dilution (partial drain & refill).

Important: Pool volume and current water conditions may vary. Always test CYA levels before treatment and re-test after 24 hours before making additional adjustments.

Worked example

Example: 15,000 gallon inground pool, current CYA = 10 ppm, target = 40 ppm

Step 1: Need to raise by 30 ppm

Step 2: Chart says 15,000 gal / raise 30 ppm = 180 oz (1.41 gal)

Step 3: Day 1 — add 90 oz, allow water to circulate, and re-test after 24 hours.

Step 4: Day 2 — if still low, add remaining 90 oz, run pump 24 hrs, retest

Step 5: Target reached at 38–42 ppm ✓

3 Add It Right

How to add it correctly

  1. 1
    Shake vigorously for 30 seconds before each use Shake the jug well every time before pouring. If product feels thick or hard to pour, place the closed jug in warm water for 5 minutes, then shake again. This is normal, not a defect.
  2. 2
    Pour slowly near a return jet with pump running With your circulation pump running, pour slowly near a return jet so water distributes the product evenly. Do not add to chlorinators or floaters.
  3. 3
    Run pump for at least 24 hours to ensure even distribution Keep your pump running for at least 24 hours after adding.
  4. 4
    Retest after 24 hours — add second dose only if needed Retest CYA with your test strip. If still below 30 ppm, add the second half of your calculated dose. Retest again after another 24 hours. Stop adding once you reach 30–50 ppm (chlorine pools) or 60–80 ppm (saltwater pools).

When to add CYA stabilizer

🌊

Opening your pool for the season

Always test CYA at opening. Winter rain and water top-ups dilute stabilizer. Most outdoor pools need a dose at the start of every swim season.

☀️

Chlorine disappearing too fast in summer

If chlorine burns off within hours on sunny days, low CYA is the most likely cause. Test first to confirm, then dose accordingly.

🌧️

After heavy rain or partial drain & refill

Any time more than 20% of your pool water is replaced, CYA is diluted proportionally. Retest and top up as needed.

📅

Monthly check during outdoor swim season

Test once a month. Outdoor pools lose CYA gradually through splash-out and water top-ups over summer.

🚫

Do NOT add if CYA is already 50 ppm or above

High CYA neutralizes chlorine effectiveness. The only solution is to partially drain and refill with fresh water. Adding more stabilizer will make the problem worse.

🚫

Do NOT use in indoor pools, hot tubs, or spas

CYA only protects chlorine from UV sunlight degradation. Indoor pools and spas have no sun exposure and do not need or benefit from CYA stabilizer.

Compatible with

Chlorine Pools Saltwater Pools Inground Pools Above Ground Pools All Pool Surfaces All Filter Types ✕ Indoor Pools ✕ Hot Tubs / Spas

For SDS, Please send us an inquiry at support@durabasics.com