02-14-2009, 12:00 PM
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he might get it to cycle without water chages
The problem is that the shark may not do very well with the cycling.
If it was me, I would return the shark for now. Get more tiger barbs and once the cycling cloud is gone, add the shark.
OR. Return all the fish. Add some PURE ammonia every day then once you start getting readings that its going down add some tiger barbs and once you get a constant 0 reading on ammonia. Doing it this way tends to get the best results over all. Maybe it has to do with the amount of bacteria you grow, but people who do this seem to have fewer mini cycles.