AK77
Fish Herder
- Joined
- Apr 9, 2007
- Messages
- 1,512
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Because you turned off the powerheads and left the rock in a tank with no heat and no circulation. Its the same as establishing the bacteria in an external canister filter. The bacteria needs water circulating in order to supply it with oxygen and nutrients to survive. Since you did that, you put the final nail in the coffin as everythign else died and then you killed the LR too