I am planning on buying a 200 liter / 50G tank and keep 3-4 fancy goldfish in it. What I'm pondering is the scaping. I do love plants, but have been told goldfish will tear those up most of the time, and was thinking sand substrate with some large polished rock decor. However, looking at the pictures on this forum, I see a lot of you have planted tanks with your goldfish. What are your experiences with them, as I'd love to have plants to help with the bioload and for the looks.