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Lotus · 05-07-2008, 10:03 AM

As other said, removing the gravel/decorations caused the problem. The bacteria live on the hard surfaces, in addition to the filter media. Changing out those things in a new tank can cause an ammonia spike.

05-07-2008, 10:03 AM	#5 (permalink)
Lotus Moderator Join Date: Aug 2003 Location: Southern California Posts: 13,324	As other said, removing the gravel/decorations caused the problem. The bacteria live on the hard surfaces, in addition to the filter media. Changing out those things in a new tank can cause an ammonia spike. __________________ Lotus and Ecotank's tanks "So long, and thanks for all the fish."