Jasharin

Again, #1 but ditch the big, out-of-place rock on the left.

This is only the case if your water supply is treated with chloramines. If your water is just treated with plain old chlorine, any old water conditioner would work. If you're unlucky enough to have a municipal supply treated with chloramines, you'd need to look more carefully at what water conditioner you use, and you'd probably want to get one that locks away any ammonia produced during treatment.

I'm thinking about setting up a cichlid tank, and the idea of keeping some shell dwellers has stuck in my mind. I was wondering what sort of shell dweller species are available in New Zealand, preferably Christchurch? I'm open to stock from both LFSes and breeders (not that it takes much to breed shell dwellers from my understanding).