Perhaps just add dry dead rock and let the tank seed it. I've started a 6 gal nano and it's been running aprox 3 weeks and almost finished cycling. I'm @ the point if I wanted more rock in the tank i'll be dry rock as I don't want to introduce problems such as what you posted and mess with the cycle.
The acid technique is to kill 100% everything on/in rock with a strong acid. I've used Muriatic acid. If you use an acid read and reread on how to handle and proper method as with any strong acid it can be dangerous. I've tested a few small pieces for the sake of learning and when complete the rock is more porous and white as white, very impressed. You don't need to buy more rock if you think that new piece is 'bad' just kill it and let the tank seed it fresh.
If you wanted specific methods, I'd be happy to answer. There is much on Uncle Google about this technique as I'm sure some on this forum.
Last edited by ckmullin; 02-28-2013 at 03:21 AM.
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