https://growace.com/products/1-gallon-pvc-grow-bags-10-pack?gclid=CjwKCAjwndCKBhAkEiwAgSDKQRqyvx9X5QTBUIrlWDV-mrevAYNm3gv5q0XJMPvXCv8lTa36hoeVJRoCXwsQAvD_BwE

These are what I use, but I gettem on Ebay.

I lovem, because they're taller and thinner, and use a smaller footprint.

(Don't know if I already answered this, back in June. It just popped up in my notifications.)