User talk:223.185.9.72

June 2022
Hello, I'm Pulpfiction621. I wanted to let you know that one or more of your recent contributions&#32;to Trickling filter have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. Pulpfiction621 (talk) 17:49, 2 June 2022 (UTC)