I have kept fish tanks before. Several small sizes (>30 gallons) and a couple big ones. I've kept African Cichlids and even have them spawn! I've had a nice planted community tank! But that was 6 years ago, and now I am having my butt handed to me by some carp.
Here is the set up:
55 gallon tank, about 4 weeks old.
2 Aquaclear 50 filters (one for either side)
25 live plants (that serve as perpetual snacks)
3 6 inch koi
1 3 inch black moor
2 2 inch mollies
2 1 inch ballon mollies
And a resident small pleco
Measurements are sans tail fins.
I know I am experiencing NTS ( new tank syndrome). My last readings showed everything being fine -except for nitrites. I bought some ammonia chips for the filters and now have them set up with ammonia chips, carbon, and then sponge in that order. I can't remember ever having a cycling issue with previous tanks. But I never kept koi. I know that the koi are not staying in this tank, we had the bright idea that we wanted a koi pond, and wanted to grow them from small fish. The water is cloudy from when I assume is bacteria and we've done a 50% water change this week.
The fish were added like below:
Koi and pleco
1 week later
1 week later
The black moor
(Please excuse my typos, I am using my phone to post.)