Help! 4 dead newts over several weeks

[rreu]

I have fully grown Iberian Newts. 4 have died in the past weeks. The water turned a bit cloudy before or after they died. changed most of the water.
They seem to get milky when they died. Not sure if that is just standard bacteria or is there some medicine that I should add to the water now...

One died overnight from yesterday. I noticed the one was lethargic and maybe had a bit of white spots here and there. Mouth was partially open.
I do feed them earth worms occasionally. Not sure if that is a problem.
Also the last two died about a week after my large albino laid eggs.

Ray

 

[MnGuy]

What are you water parameters?

How long did you have them before they died? How long has you tank been up and running?

Are you using treated tapwater? Did you do a big water change recently?

 

[rreu]

Water Nitrogen is fine. I did move them from a 15 gallon to a 20 gallon after 1 previously died. They were in there a couple weeks before these now died.

 

[MnGuy]

Water Nitrogen is fine. I did move them from a 15 gallon to a 20 gallon after 1 previously died. They were in there a couple weeks before these now died.

That's not really enough info. I'm sorry, but your cryptic posts, purposeful lack of information and refusal to answer basic questions is really worrisome and not a great sign.

What are the nitrite, nitrate and ammonia levels? When did you do your last water change? How long has your tank been running? Is it fully cycled?

Sometimes cities will over-treat their water supply if there's concerns about water quality, and if you don't over-dechlorinate your water (i.e. add more dechlorinator than usually recommended for the amount you're changing), you can harm fish/amphibians. I know because I've lost some fish this way.