[ralphie16]

i got live rock that has been cycled in my tank for 2 months now, ran tests, no ammonia, no nitrite. ph=8.3, sg=1.025. all fish die with 72 hrs. never had a fish die on me ever before this tank. what could be possible reasons? no silcone work, only primer and cement for plumbing but that was done a long time ago.

[ralphie16]

i meant to write its a new tank, just bought it a few months ago and put in the live rock and skimmer when I got it. been maturing for 2 months now.

[CubsFan]

What are the fish that you have had die, and how have u been acclimating them?

[ralphie16]

2 were mollies and 2 were damsels

they were acclimated drip method to equalize ph and sg. put in QT for several weeks. then acclimated and introduced to display.

[leebca]

Sorry to hear of the problem.

Take a lot of time and compare what you did with the guidelines here and note the differences: Setting Up a FOWLR Aquarium

There is more to water quality than just the tests you've performed. This may give you some clues on what to look for with regards to what may be wrong: What is Water Quality.

There's a lot of reading to do. Take it slowly. You will be the best detective to figure it out, but how good you are at listing the possible problems will depend upon how good you are at understanding the things that can go wrong and how good you are at detecting possible problems with your setup. The greatest tool you will have for detecting the problem(s) is information and knowledge which is provided in the above links.

Good luck!

[tullsterx]

Where did you get your water? If it's not RO or treated to remove the chorines and stuff. . . I bet that's the problem. Your water must be poisonous to kill damsels that quickly. Sorry bout that. Sucks. What about the primer and the cement. . . toxic?