Hello guys I'm about to start my first container pond. I plan on buying one of those 110 gallon TuffStuff stock tanks. Anyway what kind of filtration should I use on this? I'm planning on keeping some goldfish and plants in it. I've been looking around and seen this. Would that be a good thing or should I just buy a pump and make the filter? If so is this design good? If I do that what size pump should I get? I've found these: 1, 2, 3. The only thing with this is that I'd have to disguise it somehow. Has anyone ever made a waterfall on a container pond? Sorry for all the questions I just want to get this right