Rummynose Tetras Dead. Why?

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punky

Aquarium Advice Regular
Joined
Aug 15, 2006
Messages
93
Hi, I have a planted tank and I dose EI and have pressurized. About 2 weeks ago I had a shrimp death but I though that it could be a fertilizer overdose. But now 3 rummynose tetras died. I can't get it. PH 6.8 - 7, no ammonia and no nitrites. My tap water has high GH. What could be the problem?
 
What's your kH? A low kH could attribute to pH swings that could affect them. Rummies are pretty sensitive fish. How long had you had them?
 
kH = 5 - I don't think it is that low. I have had them for a month now.
 
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