In my November Newsletter I wrote about filtering my painting waste water. For any acrylic painters who want more information about this process, I followed the instructions on the Golden Artist Colors website. The most cumbersome part of the process is gathering your materials. But I was able to find everything I needed at my local hardware store and on Amazon. Let me know if you're having trouble sourcing something, and I will gladly tell you where I got it. Happy--and responsible--painting!