I have a 20 gallon long tank that I decided to make a fire-bellied newt tank. There is a land portion in about a third of the tank separated from the rest, which is water. A piece of driftwood provides access to water. I bought one newt about a month ago, and another about 2 weeks ago. I also keep 4 tiger barbs in the water. The problem is that both newts died. The one bought 2 weeks ago died 1 week ago (lived for one week). The one I bought first died 2 days ago. My ammonia and nitrite levels are both 0, but my pH is rather high (about 8.5). I was just wondering if a high pH could be harmful to the newts. If not, what could have killed them? The fish are active and healthy looking with rich color and eat well. Why did my newts die?