Welcome.
I just missed you in the chat room. Sorry There isn't usually anyone in the chat until about 9 PM central time. If you will post your questions here, I'm sure someone will be glad to help.
[skarol98] 6:27 pm: i have a question
[skarol98] 6:27 pm: im building a raised pond
[skarol98] 6:28 pm: and I was looking at one here why do they put carpet
[skarol98] 6:28 pm: down
I have galvanized stock tanks set up for lily ponds. One doesn't even have a bottom in it. I used carpet to pad the bottom of the liner and protect it from punctures. I'm sure others will chime in also.