Thanks, Gina, all good points!
Tosh, I would say that collecting live rock and sand would be sooo excellent, I wish I lived with you!
I have to say i'm not sure about what is available in your area, and what nasty hitchhikers could be hiding in any rock you obtain there. I would pick off any predatory crustacians for sure, also id any snails you may get as they are not all herbivores by any means.
live rock/rubble and some sand would be an excellent start for your tank. Are there any local reefers that could help you out on your search?
Totally jealous.

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240 gallon glass mixed reef 2x 250 watt m.h., 2x 175 watt m.h., 3x 110 watt vho's.
55 gallon propagation tank, 2x 96 watt pc's
Empty 125 gallon tank
reefer girrrl!