10-03-2009, 06:47 PM
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I don't think I would do a tear down, the tank for some reason has not even began to cycle. Keep doing the water changes to keep ammonia levels low for shark. Soon, you should start getting nitrite reading. You will want to keep doing the water changes to keep nitrites under .25 ppm.
Once the tank appears cycled, zero ammonia and nitrites, you will want to start adding fish slowly. No more than one or two fish at a time.
The waiting time, will also give you the chance to observe the shark, to make sure the deaths where not disease related.
You will also want to add the water conditioner with every water change to remove chlorine. Prime is a good one to use on a cycling tank.
Last edited by Twistersmom; 10-03-2009 at 06:50 PM..