Pablo Posted August 7, 2005 Report Share Posted August 7, 2005 Still work in progress setting up my planted 300 L Community Tank, as I live next to a Boulder type river next to the Ruahine Ranges I have a limitless supply of rocks available to decorate the Tank as naturally as I can. Bearing in mind we have a plastic rainwater supply tank, not town water. Q. what rock types can I use / not use? there is lots of greywacke and deep red basalt, are these ok? should I steer clear of any with white streaks and layers in them (silica??) Quote Link to comment Share on other sites More sharing options...
Caryl Posted August 7, 2005 Report Share Posted August 7, 2005 Greywacke and basalt should be fine I think. It is limestone you need to watch out for as it leaches and alters the pH. Pour a little vinegar over the rock. If it fizzes, don't use it. Some white rocks are fine eg marble. It is times like this I really miss our late member June Goldsack, who was president of the local rock and mineral club. She was a mine (no pun intended) of information. Quote Link to comment Share on other sites More sharing options...
Warren Posted August 7, 2005 Report Share Posted August 7, 2005 You'll be able to make a great African Cichlid setup with those rocks!! Quote Link to comment Share on other sites More sharing options...
Rory Posted December 17, 2005 Report Share Posted December 17, 2005 It is times like this I really miss our late member June Goldsack, who was president of the local rock and mineral club. She was a mine (no pun intended) of information. ME ME ME PICK ME!!!!! I study geology starting my 3rd year next year. As for the question here, NZ is pritty safe ie (other than limestone) all our accessable natural rocks are pritty safe, do the vinigar test, other wise get a rock checked out if it shows any bright colours as these colours can be a product of some nasty things in the rock! Who ever is in the south island is lucky, you guys have all that shist, and gneiss, granite...all the cool looking stuff! Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted December 17, 2005 Report Share Posted December 17, 2005 I'm insulted. At least we share things. We let you guys have the traffic jams. Quote Link to comment Share on other sites More sharing options...
Ira Posted December 17, 2005 Report Share Posted December 17, 2005 And apparently from what I noticed last time I was driving in chch, all the turn arrows on the traffic lights too... Quote Link to comment Share on other sites More sharing options...
alanmin4304 Posted December 17, 2005 Report Share Posted December 17, 2005 On ya bike Quote Link to comment Share on other sites More sharing options...
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