Thank you so much for the advice. I can see that there are color changes in the Culator, and I will post those when I change out the bag. I have subscribed to the forum, so I hope you can see that. Let me know if you have any questions about that. I have two additional questions, and one is a pool structural one that I would like to get opinions about, and post pictures. Please let me know if you'd like me to post that here or start a new thread. Thanks again so much for all of the help!!!!