What kind of rocks are these?
- Thread starter Juice
- Start date
Guess I owe you! I'm curious myself what it could be. There are physical tests you can do on rocks such as seeing how it fractures when struck, how hard it is, etc. If you could get in touch with a local group of rockhounds they could almost certainly id it from the pics.
White vinegar, when distilled to 5% acetic acid, has a ph of 2.4. Ph Down (which is sulfuric acid) is under 1, so you'll get a significantly stronger chance of an immediate, noticeable reaction with Carbonates.
But, as SubRosa said, if you're doing a tank for fish that like alkaline water, it really doesn't matter much!
But, as SubRosa said, if you're doing a tank for fish that like alkaline water, it really doesn't matter much!
I would say that's sandstone, that's been worn down by sea critters.
Here is a hunk that I picked up from a local beach. You could see where it was falling away from a crumbling cliff and being broken down by the waves. There was a couple of rocks the size of a small car covered with those holes.
I grabbed a couple of smaller bits, thought they would work great for kuhli loaches or small cory catfish.
Ian
Here is a hunk that I picked up from a local beach. You could see where it was falling away from a crumbling cliff and being broken down by the waves. There was a couple of rocks the size of a small car covered with those holes.
I grabbed a couple of smaller bits, thought they would work great for kuhli loaches or small cory catfish.
Ian
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This is what I found : [SIZE=-1]Holey Stone aka Odin Stone - Usually a soft stone with naturally occurring holes, that were produced by erosion, wind, wave action and/or sea creatures, not man made! The holes in the stones were created by the Earth Mother herself and all are one of a kind. These stones are hand picked, on a beach in Northern California.
[/SIZE][SIZE=-1]The pic that goes along with that description is dead on the same as these rocks. They passed the fizz test but I probably wont be using them in anything other then the shellie tank or any other cichlid tank I may do in the future
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I would say that's sandstone, that's been worn down by sea critters.
Here is a hunk that I picked up from a local beach. You could see where it was falling away from a crumbling cliff and being broken down by the waves. There was a couple of rocks the size of a small car covered with those holes.
I grabbed a couple of smaller bits, though they would work great for kuhli loaches or small cory catfish.
Ian
Yep they look to be the same! Good to know they are aquarium safe
ty
Mine do come from a beach about 7,000 miles away
http://maps.google.co.nz/maps?hl=en&ie=UTF8&ll=-39.606878,174.241276&spn=0.041396,0.083084&t=h&z=14
http://maps.google.co.nz/maps?hl=en&ie=UTF8&ll=-39.606878,174.241276&spn=0.041396,0.083084&t=h&z=14
