Karplunk
New Member
Hi, I recently bought 4 neon tetras in my new 5 gallon fish tank. The tank is fully planted and I treated the water with tap water conditioner. I have only a filter installed in the tank (as I heard that internal filters aerate the water as long as it create "ripple" on the water surface).
Yesterday when I thought there was not enough oxygen in the water, I put my filter at its full power and I came back 2 hours later, and 3 of my neon fish died. I put the filter at its lowest power and the remaining fish is still alive right now. However, the survived neon fish like to go close to the filer and ride the wave. Does this mean that there isn't enough oxygen in the water?
The tank temperature is 78F
pH is 6.9
Yesterday when I thought there was not enough oxygen in the water, I put my filter at its full power and I came back 2 hours later, and 3 of my neon fish died. I put the filter at its lowest power and the remaining fish is still alive right now. However, the survived neon fish like to go close to the filer and ride the wave. Does this mean that there isn't enough oxygen in the water?
The tank temperature is 78F
pH is 6.9