Under 100 Gallon Goldfish Pond On my first day was on July 8th, 2014. Under 100 Gallon Goldfish Pond. Hey! I added beneficial stuff to the water. It is just a mother nature for the water that heavy rain pours for a few days. One fountain pump. I noticed that my orange comet goldfish have trouble with tummy ache. Making too much noise with the water splash in my 20 gallon aquarium that 5 inch goldfish swiveled up and then down. I just looked at it for a few days. Then I decided to try to catch with my net on my comet goldfish to transfer to a new home in the goldfish pond. Then wait for a few days later and I just couldn't believe with my eyes. :;eye My comet goldfish seems more comfortable and heal very quickly. It just amazed to me. No wondering but why? So then I took all of my 4 goldfishes from another 25 gallon aquarium tank out to the goldfish pond immediately. The goldfishes in that pond have always happy to swim all over. I bought 6 artificial square plants and 3 artificial water lilies from Dollarama Store. So then I attached them together with the wires. It just go float by itself. Beautifully! I loves it! Good for them to keep out from the sun heated. They just go hide underneath to keep cool it off from the artificial square plants.