Lava Rock?
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Old 02-21-2004, 01:42 PM   #1
Raul-7
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I found lava rock, which is basically pumice, at Home Depot that was used for grills...would it be suitable for aquarium use? And how much would be sufficient to provide good biological action, as in quanitity per gallon? Or something like that? :?
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Old 02-21-2004, 02:33 PM   #2
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I imagine its the same thing but I dont know if they treat the grill "lava" rock with anything so I am not going to say "yes" its the same.. my guess is yes though.
Lava rock has more surface area then pretty much anything else you can put in a tank for bacteria because of the porosity. I use it in small amounts in my filters as a media as well.
There is no formula to figure out how much you should use per gallon because nothing says you have to use it, but I think that its just another *plus for keeping my tanks healthy, not to mention it is great stuff for ferns and mosses to attach to. :lol:
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Old 02-21-2004, 03:08 PM   #3
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No, I'm planning to use it in the substrate...
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Old 02-21-2004, 04:31 PM   #4
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huh ?
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Old 02-21-2004, 05:15 PM   #5
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Pumice or lava rock, whichever you want to call it, is used in the substrate to "recycle nutrients" since they house beneficial bacteria...
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Old 02-22-2004, 03:32 AM   #6
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I've never heard of using lava rock in the substrate. Are you talking about rock shaped lava rock, or small pebble-type pieces?
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Old 02-22-2004, 04:52 AM   #7
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The lava rock for grills will work, as long as it's not treated with anything. Home depot also sells smaller bags of smaller sized pieces in the inside garden area.

The one problem with lava rock is that it's rather sharp, so take any bottom feeders into consideration.
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Old 02-22-2004, 05:09 AM   #8
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I believe pumice floats. You may have trjouble using it as a substrate.

BTW: Random fact - Most of the pumice in the world comes from the island of Krakatoa which completely exploded in 1883. Pieces of the island wash up onshore on beaches aroudn the world to this day.
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Old 02-22-2004, 01:04 PM   #9
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Quote:
is used in the substrate to "recycle nutrients" since they house beneficial bacteria...
Every surface in your aquarium from wood , stone , equiptment , plants , gravel etc. has beneficial bacteria living on it... I think that using lava rock "in" or "as" a substrate might do more harm then good because of its naturally coarse design, it would probably trap more mulm then normal substrate.
Plus as Daemonfly allready said, it would tear up any bottom feeders badly. I dont see where you would gain any benefits by using it except for possibly a different look to the tank.
Unless Im still confused, do you mean just inserting a few small pieces into normal substrate or using an entire tank of it ?
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Old 02-22-2004, 02:51 PM   #10
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Quote:
Originally Posted by BobbyDrake
I believe pumice floats. You may have trjouble using it as a substrate.

BTW: Random fact - Most of the pumice in the world comes from the island of Krakatoa which completely exploded in 1883. Pieces of the island wash up onshore on beaches aroudn the world to this day.
Hmmm.... if the island completely exploded where do they get the pumice from? I know they don't walk on beaches picking it up. I would highly suggest checking your facts on this one. I doubt that many pieces of pumice have been floating in the ocean for 121 years.
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Old 02-22-2004, 05:01 PM   #11
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Actually Rex I have heard of Krakatoa and the monster volcanic eruption - apparently it was heard as far away as Australia and felt in England and France. (not a small explosion considering it was an Indonesian island)

Not sure on the floating pumice being around quite that long but there were stories of it being so thick that men could walk for miles and miles on top of the floating rocks in the ocean and reports of it for several years later etc...

I read up on it one time after seeing a show on discovery called "Mega-Tsunami" - apparently this explosion did create one with 40 meter waves.
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Old 02-22-2004, 05:06 PM   #12
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I'm going to use under my normal substrate, basically I'm making a DIY Power Sand...it's a mix of mostly pumice and peat, mixed with laterite.
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Old 02-22-2004, 08:11 PM   #13
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So that's where Godzilla came from. Crap is always exploding in those movies. :lol:
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