By Nature2



Part # CRG45

Alternate Part #'s 21145X, 2700-010, 300377, W28145, FOU-451-1003, W28145EACH, ZODW28145

Product Description

The Nature2 Proffesional G provides up to 6 months of water purification for your swimming pool. Keep your swimming pool clean. Nature2 G comes in three different sizes. Make sure you select the correct size for your vessel and swimming pool.

Cartridge selection: (three sizes available)

  • 2501025 (CRG25) - 10,000 - 25,000 gals
  • 2501035 (CRG35) - 25,000 - 30,000 gals
  • 2501045 (CRG45) - 35,000 - 45,000 gals
    Cartridge dimensions: 13.75"x4.63"

Click here for more Nature2

Product Specifications

Treatment Capacity:
45,000 gal.
Cartridge Only

?     Asked on 7/14/2006by Guest

I would like to know what type of weekly maintenance (chemicals) is necessary with the Nature2 system?

A  Answered on 7/14/2006 by InyoPools Product Specialist Patrick P.

With the Nature2 you would maintain your pool the same way as if you did not have Nature2.  The only thing that will change is that you will maintain a lower chlorine residual with the Nature2. Instead of maintaining a chlorine residual of 3.0, you would maintain a chlorine residual of 1.5 with Nature2.  This results in using approximately 50% less chlorine.

?     Asked on 5/29/2016by Geoffrey Raymer

Is this the proper cartridge for my Claritec Professional In-Ground Model RG that specifies replacement cartridge CRG45?

A  Answered on 5/30/2016 by InyoPools Product Specialist Lennox H.

Hi Geoffrey, This is the correct cartridge for the Claritec Professional vessel.

?     Asked on 5/8/2017by Marcy Berry

Hello, I have an older Nature 2 filter. I need a replacement cartridge. The information I have is that it reads 29145 MG 45 gal Visipure. The label has come off of the unit itself so not sure what to order since I don't see this exact number on any of the replacement filters. Any input would be appreciated!

A  Answered on 5/13/2017 by InyoPools Product Specialist Lennox H.

Hi, Marcy. This W28145 cartridge is the closest replacement I've found based on the info provided.

?     Asked on 5/11/2017by Sheree gossett-johnson

I bought 2 nature 2 pool filters. The second one was the correct one. Are you able to look back in your records to see which one I need to order from you ?

A  Answered on 5/11/2017 by InyoPools Product Specialist Patrick P.

Hi Sheree, based on your past order history you need the DuoClear 25 Nature2 Cartridge

?     Asked on 4/21/2018by Marvin

I use the W28145 cartridge with a DE filter system. The beads and weight of the cartridge don't seem to change. Is this normal? I am inconsistent in running the filter pump. Does this affect the effectiveness of the cartridge?

A  Answered on 4/24/2018 by InyoPools Product Specialist Megan C.

The cartridges should be replaced every six months, this time will vary depending on how the pool is operated. 


Review Summary

 (Average 4.75  out of 5 stars)
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