Return to the Laundry Room Forum | Post a Follow-Up

 o
1/3 cup of STPP?

Posted by kimmers69 (My Page) on
Thu, Feb 24, 11 at 2:40

I got my first order of STTP yesterday. I am using it in a TL and according to our water district's website, the hardness of our water is 300 parts per million (ppm) or 17.5 grains per gallon, categorized as "very hard."

Following the advice I found in a previous STTP thread, I added 1 TBSP at a time, agitated and then felt the water. The water did not being to feel slippery until I added 5 TBSP!

Can that be right?!?


Follow-Up Postings:

 o
RE: 1/3 cup of STPP?

Assuming your also adding your normal level of detergent first.... I would say yes 1/3 of a cup should work fine with your hard water. Some people on this forum use STPP 1:1 and others 1:2 some use even less. It all dependent on many factors:
what type of soap/detergent your using
Soil load
Washing time
Water quality
Machine type
Suds level
Desired outcome


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Laundry Room Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here