Problem with crs

[nicpapa]

Hi there i keep crs in two 30 liters tanks.

Setup in both tank is the same.

Water parameters are  the same , all is the same.

My water parameters  are.

Kh 0

Gh 5

Tds 130

Ph 6.4

Light is 30watt t8 for the 2 tanks.

Filter eheim liberty 2040, with sponge filter on the inlet and sera filter media with pumice stone.

No3 keep it at 5 -10.

 

Minerals salty shrimp gh + ro water, substrate is  akadama.

 

The problem is only in one tank, i have deaths, every day i found 2-3 shrimp dead.

There are a lot of babys in there, all of the sizes.

I found dead not only olders but youngers.

 

I think all it start, after remove one plant, blyxa japonica.

So its a bacterial infection?

I cant understand.

 

I try big water changes. 

Clean filter.

Add salty easy filter.

Clean substrate, and add some new akadama on the top.

 

I cant find what it cause it , its something that poison them.

Any ideas?

[Shrimple minded]

How old are these two tanks?

[nicpapa]

How old are these two tanks?

Tank run about 2 years..

But i change and add  some new akadama every 6-8 months.

[Lyana]

Sounds like something was released when you moved the plant. Have you checked for ammonia or nitrites?

[sarah]

Have you been doing all this with your bare hands in the tank? Perhaps something on your skin?