Careful with goldfish. They create a lot of waste. So much so that they create ammonia. I have a 900 gallon decorative pond, 6 goldfish killed all my tropicals and 2 large plecostomus. I would suggest putting plecos or algae eaters (yes, it's an actual fish) or even grab a bucket and grab a few snails. All three will keep your trough clean without polluting the water...all three are available at Okeechobee Feed.
Yes they do.
Yes they do and it helps
Thanks! Your answer is awaiting moderation.