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Pet Forum / Aquaria / Marine Reef / September 2005inexpensive support for LR reef safe?
I do not want sea creatures to rearrange things inside the tank, so I plan to use something inexpensive (relative to live rock) as a support plate buried in the sand. Are granite/marble flat rocks reef safe? >I do not want sea creatures to rearrange things inside the tank, so I plan > to use something inexpensive (relative to live rock) as a support plate > buried in the sand. Are granite/marble flat rocks reef safe? yes, although the marble may affect your ph. it's limestone. It's calcium carbonate. Might be beneficial to the ph, but I don't see any reason it would rase it too high. Wayne Sallee Wayne@WayneSallee.com >>I do not want sea creatures to rearrange things inside the tank, so I plan >>to use something inexpensive (relative to live rock) as a support plate >>buried in the sand. Are granite/marble flat rocks reef safe? > > yes, although the marble may affect your ph. it's limestone. > It's calcium carbonate. Might be beneficial to the ph, but I don't see any > reason it would rase it too high. So, should I avoid limestone or not? Is there a proportion such as lbs of limestone per gallons of water that is "recommended"? Personaly I would use dry base rock and put the sand around it,and put the live rock on top of the base rock. Are you trying to cover the whole bottom? Are you putting sand in the bottom? Also for little different style of rock bottom, look at http://waynesallee.com/makereefcementtank.htm Wayne Sallee Wayne@WayneSallee.com >>It's calcium carbonate. Might be beneficial to the ph, but I don't see any >>reason it would rase it too high. > > So, should I avoid limestone or not? Is there a proportion such as lbs of > limestone per gallons of water that is "recommended"? What I am trying to avoid is that the not-flat base rocks would create a pressure point on glass tank bottom. I have 3" sand bed, IMO if I put flat support structure and put another 1" or so of sand on top then what I acomplish is that - the weight of rock structure on top would distribute more evenly - have more LR or base rock stability - wont loose a few inches of LR under the sand - force sand below flat rocks to receive less oxygen for denitrification > Personaly I would use dry base rock and put the sand around it,and put the > live rock on top of the base rock. > > Are you trying to cover the whole bottom? Are you putting sand in the > bottom? I see, yea that will be fine. Also that link that I gave you also creates that same effect. But yes that will be fine. The marble won't be a problem. Wayne Sallee Wayne@WayneSallee.com > What I am trying to avoid is that the not-flat base rocks would create a > pressure point on glass tank bottom. [quoted text clipped - 10 lines] >>Are you trying to cover the whole bottom? Are you putting sand in the >>bottom? Yep, I looked at the link. Pretty creative stuff. Thanks alot :) >I see, yea that will be fine. > [quoted text clipped - 19 lines] >>>Are you trying to cover the whole bottom? Are you putting sand in the >>>bottom? > What I am trying to avoid is that the not-flat base rocks would create a > pressure point on glass tank bottom. You can also avoid a pressure spot on the glass by putting in a thin piece of acrylic on your tank bottom. > So, should I avoid limestone or not? Limestone is fine -- it will boost the Ph of the water. Dolomite (a variety of limestone) is sometimes recommended as a substrate in FO tanks. George Patterson Give a person a fish and you feed him for a day; teach a person to use the Internet and he won't bother you for weeks. Thanks George. >> So, should I avoid limestone or not? > [quoted text clipped - 4 lines] > Give a person a fish and you feed him for a day; teach a person to > use the Internet and he won't bother you for weeks. As has been pointed out limestone is fine. Most limestone's are just Calcite rather than Aragonite ( corals , shells etc...), although at one time it was Aragonite, that has just been altered during fossilization and is devoid or Strontium. The only real issue with limestone, in a reef tanks, is when it is used in a reactor, as some grades are high in phosphate. There may be a slight initial rise in the pH. This won't last long as and sand or base will get coated with bacteria/organics and will have no effect on pH, unless _maybe_ the pH falls below its "pH floor", which is highly unlikely.  SignatureBoomer Want to talk chemistry ? The Reef Chemistry Forum http://www.reefcentral.com/vbulletin/index.php WCWing@nospamChartermi.Net Former US Army Bomb Technician (EOD) Member; IABTI, NATEODA, WEODF, ISEE & IPS If You See Me Running You Better Catch-Up : > It's calcium carbonate. Might be beneficial to the ph, but I don't see any : > reason it would rase it too high. : : So, should I avoid limestone or not? Is there a proportion such as lbs of : limestone per gallons of water that is "recommended"? You just used "inexpensive" and "reef" in the same sentence....funny! Would you consider using 2" or 3" diameter PVC pieces as small pillars? You cut them so they are just tall enough to stay hidden in your sand bed, and place them strategically so that your LR is fully supported at various points by these hidden pillars. The weight is distributed over the PVC pillars. If you fear the bottom of the tank isn't strong enough, put a plywood sheet on the top of your stand, and add a sheet of 3/4" rigid foam. Place the tank on that and the base will be fully supported. Marc > I do not want sea creatures to rearrange things inside the tank, so I plan > to use something inexpensive (relative to live rock) as a support plate > buried in the sand. Are granite/marble flat rocks reef safe? 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