New Aquarium

So we decided to try and save the goldfish in our Koi pond from the cold Denver winter. You may have seen the pond in previous posts. We have about a dozen goldfish about 6-8" long that made it through the summer. We are not confident at all they would survive the winter out there although I've heard folks say that Koi often do. I've heard that you need a heater to keep at least a small portion of the top thawed for air exchange, or do drop some occasional food in there as they don't eat much during winter.

Even after that, we figured we would probably lose them even if we did buy a small heater since we had so much difficulty getting any to live the first two years. So we caved and bought a new aquarium and will try to bring them into the house before it gets much colder (already had ice across the top once this year).
Above is the finished picture, just waiting for fish and Below is the Midway picture waiting for filter, air bubbler, and lights, and further below is the Before picture.

Below is what we started with: I didn't realize how much work is was to put one of these together, carrying and rinsing 175 pounds of gravel, placing the objects, planting the plants. (Yes those are live plants), hooking up filters and hoses, and air tubes and thermometers. Holy cow, quite the day.

Now we are waiting for the tank to "Cycle" Apparently you have to add special bacteria, and wait for it to take hold before you add fish so that when the fish pee and poo in the water the ammonia they create doesn't kill them in a week. the bacteria apparently eat the ammonia from the water and turn it into nitrite which is less harmful and only requires a 10-20% water change every week or so. We did add some other chemistry which is supposed to speed that process along as we need to get those fishy's indoors!

Enjoy!
@ksteeem