On Monday I tested my tank to find that it had 20 ppm nitrates, 0 Nitrite, 0 hardness (very soft), 0 Alkalinity, and 6.4 ph. I thought my tank had cycled, its only been up for about a week, but its planted, I used ro water, and started it with cycle, and my betta.
Yesterday I bought a kuhli loach, everything seemed fine, but suddenly tonight it started to swim around quickly upside down and in circles. I tested the water again, seemed fine (I use of the Quick Dip 5 in 1 strips). now he/she is sitting next to me in a small bowl with ro water and cycle, mixed with just a little of the tank water.
Its face underneath looks purplish, and its swimming (franctically?) around and around the bowl, mostly upside down.
The temp of my aquarium is 78
What do I do?