CuLator Ultra PowerPak 4.0

(9 customer reviews)


Patented CuLator Ultra 4.0 removes and eliminates stain-causing metals in swimming pools to non-staining levels.  

CuLator Ultra 4.0 removes 4 ppm total dissolved metals from your pool water, which prevents pool staining and water discoloration.  The goal is to have 0.0 metals in your water.  CuLator  eliminates stain-causing metals like copper, iron, manganese and lead from pool water. CuLator Ultra 4.0 is perfect for pools which have a lot of metals, larger pools, pools on well water, pools which have had a copper coil  heater “blow out” and commercial pools. The CuLator Ultra 4.0 may also be used as a seasonal treatment for general maintenance and during pool stain treatment.  CuLator Ultra 4.0 has four times the power of a CuLator 1.0.

  • Eliminates 4.0 ppm total dissolved metals (staining begins at .3) from 20,000 gallons
  • Works in fresh or salt water
  • No phosphates
  • Non-toxic
  • Free reusable protective “GatorEgg” included
  • Use in skimmer or pump basket
  • Works for up to 30 days or much longer depending on your metal level
  • Made in USA
  • Contents change color depending on metal removed
  • CuLator Color Chart

CuLator Ultra 4.0–The only way to get metals like copper, iron and manganese out of pool water which prevents stains and discoloration and reduces the metal to non-staining levels.

CuLator Ultra 4.0 often puffs up and looks like a pillow.  This is a normal.

CuLator Used

Here are a few tips to know when the Ultra 4.0 is finished:

  • The CuLator bag will shrink down to half the size it was when puffed up
  • The contents will feel watery inside
  • The contents will feel like sand to the touch


  • Start-up
  • Large Pools
  • Pools with major metal issues
  • Pools using well water
  • During and after stain removal
  • With sequestrants
  • After algaecides to prevent stains
  • With mineral purification systems
  • When pool water is discolored
  • When a copper heater coil has been “blown out”
  • Seasonal treatment for general maintenance
Weight 1 lbs
Dimensions 6 × 6 × 6 in

9 reviews for CuLator Ultra PowerPak 4.0

  1. Alfonso

    I love CuLator. I started by using a 1.0 and switched to the Ultra 4.0 after using the Metal Stain Eliminator Kit. The 4.0 just makes sense to keep my pool metal free all season.

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  2. Marie

    This product really works!!! Love it.

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    • David (store manager)


      Thank you for the vote of confidence! We are happy that the CuLator Ultra 4.0 product is working for you.

  3. Judy F.

    I love your CU lator product. We had problems with Copper in our pool…even had some green haired swimmers(!) but CU Lator has solved all of our problems. This our second season using it and we could not be happier. David was patient and knowledgeable in talking us through the issues. I highly recommend this product and this company.

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  4. Don Draper

    I put it in skimmer basket with chlorine tabs only to find out later that contact with chlorine tablets may destroy the bag per instructions. I would not have bought if I had known.

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    • David (store manager)

      Don’t worry, the bag will last several months on chlorine tabs. Just check the bag every week…you shouldn’t have any problems. If the bag is damaged or torn, just discard it.

      If you have any questions, please give us a call at 954-764-7654.


  5. David M.

    Very please with this product and the staff at Periodic Products. They were most helpful in taking the time to not only answer questions via email but also over the phone. I will definitely continue to use these products in our pool for stain removal.

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    • David (store manager)


      Thank you for the comment! We are happy you are pleased with the CuLator products and especially the Ultra 4.0. The Ultra 4.0 is usually good for an entire season.

  6. H. Davis

    Pool closing… thanx for all your help this Spring with our “Purple Haze” problem..We survived the summer with pristine pool water and no problems .

    Here are the photos of our pool. The last two photos show the residue that accumulated in the street at the end of the vacuum hose.
    The numbers are looking great; we will be placing the CuLator cartridge in the pump basket this evening!
    Once again, thank you for all your help. I look forward to doing business with you in the future.

    Uploaded image(s):

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  7. Vincent (verified owner)

    Very simple to use and very effective at chelating copper. Worth the cost.

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  8. Belle (verified owner)

    thank you

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  9. SHELLY (verified owner)

    This stuff works!! We had copper staining on our fiberglass pool (from using the wrong shock) and this cleared it up.

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