LR Question
- Thread starter Reefdad
- Start date
iani
Supporting Member
[quote author=GreshamH link=topic=6421.msg82466#msg82466 date=1235004354]
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
G
GreshamH
Guest
I think you'll be fine 
Just get some other real rock as well.
Just get some other real rock as well.
G
GreshamH
Guest
[quote author=iani link=topic=6421.msg82502#msg82502 date=1235015320]
[quote author=GreshamH link=topic=6421.msg82466#msg82466 date=1235004354]
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
[/quote]
Not all volcanic rock is black...it comes in all colors in fact
[quote author=GreshamH link=topic=6421.msg82466#msg82466 date=1235004354]
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
[/quote]
Not all volcanic rock is black...it comes in all colors in fact
G
GreshamH
Guest
No problem
Lyn
Guest
[quote author=GreshamH link=topic=6421.msg82504#msg82504 date=1235015405]
[quote author=iani link=topic=6421.msg82502#msg82502 date=1235015320]
[quote author=GreshamH link=topic=6421.msg82466#msg82466 date=1235004354]
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
[/quote]
Not all volcanic rock is black...it comes in all colors in fact
[/quote]
Black sand beaches in Hawaii are not the norm. The majority are "white" sand, made from coral and shells. I had my kids at school compare sand under a microscope from 2 sides of the island (Oahu). Aside from tiny coral pieces, it is full of tiny shells in a multitude of colors.
There are gray sand beaches- made of Basalt rock (after time and pressure turned the lava into it), and there are green sand beaches made of olivine, a semi-precious gem found in lava/basalt rock. Very beautiful and sparkly! There is also a rare red sand beach that I've never been to.
http://nvcc.edu/home/cbentley/geoblog/2008/12/sands-of-hawaii.html
http://www.nvcc.edu/home/cbentley/geoblog/2008/12/green-sands-beach-hawaii.html
http://www.msnbc.msn.com/id/24015993/
BTW, I made the mistake of initially buying terrestrial rock for the SW tank. It grows lots... no, TONS of hair algae. It is also hard on water chemistry. I was told by my LFS that the rock I bought was "ancient coral" and would be fine in the tank. I eventually pulled it all out and ordered Marco Rocks. Do yourself a favor and take it back to the store and exchange it for real coral rock (cycled or dead- dead is cheaper). You will be much happier and save money in the long run. I have some manmade "Live" rock, the kind they make with concrete and stick in the ocean to encrust, but I am even diappointed with that. IMHO, stick to the real stuff.
[quote author=iani link=topic=6421.msg82502#msg82502 date=1235015320]
[quote author=GreshamH link=topic=6421.msg82466#msg82466 date=1235004354]
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
[/quote]
Not all volcanic rock is black...it comes in all colors in fact
[/quote]
Black sand beaches in Hawaii are not the norm. The majority are "white" sand, made from coral and shells. I had my kids at school compare sand under a microscope from 2 sides of the island (Oahu). Aside from tiny coral pieces, it is full of tiny shells in a multitude of colors.
There are gray sand beaches- made of Basalt rock (after time and pressure turned the lava into it), and there are green sand beaches made of olivine, a semi-precious gem found in lava/basalt rock. Very beautiful and sparkly!
There is also a rare red sand beach that I've never been to.http://nvcc.edu/home/cbentley/geoblog/2008/12/sands-of-hawaii.html
http://www.nvcc.edu/home/cbentley/geoblog/2008/12/green-sands-beach-hawaii.html
http://www.msnbc.msn.com/id/24015993/
BTW, I made the mistake of initially buying terrestrial rock for the SW tank. It grows lots... no, TONS of hair algae. It is also hard on water chemistry. I was told by my LFS that the rock I bought was "ancient coral" and would be fine in the tank. I eventually pulled it all out and ordered Marco Rocks. Do yourself a favor and take it back to the store and exchange it for real coral rock (cycled or dead- dead is cheaper). You will be much happier and save money in the long run. I have some manmade "Live" rock, the kind they make with concrete and stick in the ocean to encrust, but I am even diappointed with that. IMHO, stick to the real stuff.
G
GreshamH
Guest
[quote author=Lyn link=topic=6421.msg82573#msg82573 date=1235044404]
[quote author=GreshamH link=topic=6421.msg82504#msg82504 date=1235015405]
[quote author=iani link=topic=6421.msg82502#msg82502 date=1235015320]
[quote author=GreshamH link=topic=6421.msg82466#msg82466 date=1235004354]
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
[/quote]
Not all volcanic rock is black...it comes in all colors in fact
[/quote]
Black sand beaches in Hawaii are not the norm. The majority are "white" sand, made from coral and shells. I had my kids at school compare sand under a microscope from 2 sides of the island (Oahu). Aside from tiny coral pieces, it is full of tiny shells in a multitude of colors.
There are gray sand beaches- made of Basalt rock (after time and pressure turned the lava into it), and there are green sand beaches made of olivine, a semi-precious gem found in lava/basalt rock. Very beautiful and sparkly! There is also a rare red sand beach that I've never been to.
http://nvcc.edu/home/cbentley/geoblog/2008/12/sands-of-hawaii.html
http://www.nvcc.edu/home/cbentley/geoblog/2008/12/green-sands-beach-hawaii.html
http://www.msnbc.msn.com/id/24015993/
BTW, I made the mistake of initially buying terrestrial rock for the SW tank. It grows lots... no, TONS of hair algae. It is also hard on water chemistry. I was told by my LFS that the rock I bought was "ancient coral" and would be fine in the tank. I eventually pulled it all out and ordered Marco Rocks. Do yourself a favor and take it back to the store and exchange it for real coral rock (cycled or dead- dead is cheaper). You will be much happier and save money in the long run. I have some manmade "Live" rock, the kind they make with concrete and stick in the ocean to encrust, but I am even diappointed with that. IMHO, stick to the real stuff.
[/quote]
Preaching to the choir here Lyn. I wasn't inferring all the beaches are volcanic although now that I look at it again it sure looks that way I loved geology in school, especially grade school
Around here we have a beach almost all agates (Point Reyes) and one mostly jade and jadeite (Big Sur).
[quote author=GreshamH link=topic=6421.msg82504#msg82504 date=1235015405]
[quote author=iani link=topic=6421.msg82502#msg82502 date=1235015320]
[quote author=GreshamH link=topic=6421.msg82466#msg82466 date=1235004354]
[quote author=Reefdad link=topic=6421.msg82464#msg82464 date=1235004038]
correct me if i am wrong, but most of the natural reefs of Hawaii are all based on volcanic rock.
[/quote]
True, but with the shear volume of the pacific ocean it doesn't matter. In a closed reef system heavy metals and other stuff can build up killing corals as well as other inverts. Some volcanic rock is OK but most isn't. The lave that formed that rock is a mix of all kinds of stuff.
[/quote]
If that were true wouldn't most beaches in Hawaii be black sand beaches?
[/quote]
Not all volcanic rock is black...it comes in all colors in fact
[/quote]
Black sand beaches in Hawaii are not the norm. The majority are "white" sand, made from coral and shells. I had my kids at school compare sand under a microscope from 2 sides of the island (Oahu). Aside from tiny coral pieces, it is full of tiny shells in a multitude of colors.
There are gray sand beaches- made of Basalt rock (after time and pressure turned the lava into it), and there are green sand beaches made of olivine, a semi-precious gem found in lava/basalt rock. Very beautiful and sparkly!
There is also a rare red sand beach that I've never been to.http://nvcc.edu/home/cbentley/geoblog/2008/12/sands-of-hawaii.html
http://www.nvcc.edu/home/cbentley/geoblog/2008/12/green-sands-beach-hawaii.html
http://www.msnbc.msn.com/id/24015993/
BTW, I made the mistake of initially buying terrestrial rock for the SW tank. It grows lots... no, TONS of hair algae. It is also hard on water chemistry. I was told by my LFS that the rock I bought was "ancient coral" and would be fine in the tank. I eventually pulled it all out and ordered Marco Rocks. Do yourself a favor and take it back to the store and exchange it for real coral rock (cycled or dead- dead is cheaper). You will be much happier and save money in the long run. I have some manmade "Live" rock, the kind they make with concrete and stick in the ocean to encrust, but I am even diappointed with that. IMHO, stick to the real stuff.
[/quote]
Preaching to the choir here Lyn. I wasn't inferring all the beaches are volcanic although now that I look at it again it sure looks that way
I loved geology in school, especially grade school Around here we have a beach almost all agates (Point Reyes) and one mostly jade and jadeite (Big Sur).
G
GreshamH
Guest
I didn't mean it like that Lyn (preaching) I was stoked to read what you wrote....geology is something that facinates me. I just spent 2 hours talking marine science with an east coast scientist and another hour on geology
BTW...amem
I was stoked to read what you wrote....geology is something that facinates me. I just spent 2 hours talking marine science with an east coast scientist and another hour on geology BTW...amem
Lyn
Guest
[quote author=GreshamH link=topic=6421.msg82895#msg82895 date=1235109319]
I didn't mean it like that Lyn (preaching) I was stoked to read what you wrote....geology is something that facinates me. I just spent 2 hours talking marine science with an east coast scientist and another hour on geology
BTW...amem
[/quote]
LOL ;D Glad we are on the same page!
Have you ever seen a lava tube that leads to the ocean? I saw one on Oahu, an ancient one with massive amounts of iron incorporated in it so the rock was red. The lava cooled while in the tube and plugged it with circular patterns of rock. Through erosion or perhaps seismic activity, the tube was exposed. It looked like someone cut into a red jellyroll cake. Really neat stuff for geo nerds!
I didn't mean it like that Lyn (preaching)
I was stoked to read what you wrote....geology is something that facinates me. I just spent 2 hours talking marine science with an east coast scientist and another hour on geology BTW...amem
[/quote]
LOL ;D Glad we are on the same page!
Have you ever seen a lava tube that leads to the ocean? I saw one on Oahu, an ancient one with massive amounts of iron incorporated in it so the rock was red. The lava cooled while in the tube and plugged it with circular patterns of rock. Through erosion or perhaps seismic activity, the tube was exposed. It looked like someone cut into a red jellyroll cake. Really neat stuff for geo nerds!