I set up my 25 gal tank 4 months ago. And until now, all of the nitrate and ammonia levels have stayed at 0.1 and 0 respectively.
We moved our tank into a different room 4 days ago, which meant that we had to drain about 75% of the water. We kept 10 gal of that water, and the rest is fresh.
A couple of things to note:
Before the move the tank contained:
2 dwarf Gouramis
After the move we added:
6 zebra Danios
1 African dwarf frog
Heat of the tank is about 76 and I have a AquaClear mini filter.
I've lost 3 danios in the past 2 days....maybe they just aren't a good fit for the tank? Most of the fish are hanging around the top of the tank "gasping" today.
I understand that due to the increase of waste being created, this could be causing the levels to rise. Do I need to change 25% again?
Any suggestions appreciated.
ETA: My current Nitrate Levels are about 0.8 and Ammonia 0.1