CuLator Ultra PowerPak 4.0

(18 customer reviews)


SKU: CUL-ULT-1 Categories: , , GTIN: 013964617603

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 .5 lbs
Dimensions 3 × 3 × 3 in

18 reviews for CuLator Ultra PowerPak 4.0

Based on 18 reviews
  1. Anonymous (verified owner)

    Great product

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  2. edcarolyn (verified owner)

    AMAZING!!!! Our pool water was reading metal levels at 3-4 ppm consistently so I bought the Ultra PowerPak 4.0, placed it in the skimmer basket, and brought the pool water in to get tested just 12 hours later…the metal levels were at 0 ppm!!! In just 12 hours! For a pool with 30,000 gallons! I would have had to pay so much more in chemical costs to bring the metals down. And now I can use this for the whole season and not have to worry about it! The Ultra PowerPak 4.0 is WORTH EVERY PENNY!!!

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  3. Anonymous (verified owner)

    Periodic is an amazing product. I determined that my staining was not from organics. I followed the chemistry as instructed. Also, I used the product before peak season of algae and phosphates. My pool is completely restored as if fresh plaster was just applied. I now have a complete stain free pool.

    I had estimates as high as $30k to replaster my pool. Josh has been an amazing representative to work with. It’s odd that as my pool was cloudy that he provided a timeframe that my pool would be clear. His estimated timing was as scheduled. I have a Beautiful pool, ready for summer and fun!

    Thank you-

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  4. Michael Terry

    The evening before ordering, I contacted CuLator, via email, regarding a technical question. To my surprise and amazement, I received a phone call from them the next morning. The gentleman I spoke with, David McLaren, answered and fully addressed my question/concern and did so in understandable terms. Then, based on my original question, he took the initiative and time to go through some additional points that I hadn’t even thought about. The most educational and worthwhile 10 minute phone conversation one could dream of. In addition to their CuLator Ultra 4.0 I will make it a point to use their other products whenever possible. Customer support like this is rare and so appreciated. Thanks!

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  5. Gerald (verified owner)

    Three days in pump basket on a 17000 gallon pool, keeping water from getting worse but no appreciable improvement yet

    Image #1 from Gerald
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  6. Nancy (verified owner)

    We have had a frustrating very high Copper 0.7, then added the Culator and The Blue Stuff. Culator picks up the copper, water clears up and copper level is down to 0.15. We’ll continue to change out the Culator every 30 days to keep the copper down …. goal is zero copper!. Thanks so much for your product and explanatory information.

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  7. Ian Schorr (verified owner)

    Best product on the market, and easiest to use, to remove metals along with the use of sequestering agents.

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  8. Joseph P. (verified owner)

    So far so good great product

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  9. Michael McElroy (verified owner)

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  10. 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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  11. Belle (verified owner)

    thank you

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  12. Vincent (verified owner)

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

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  13. 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.

    Image #1 from H. Davis
    Image #2 from H. Davis
    Image #3 from H. Davis
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  14. 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.

  15. 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.


  16. 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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  17. 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.

  18. 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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