Rocks - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 13 Old 04-19-2007, 04:32 PM
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flint is one of the safest from what it contains it is however when broken an edge can be 50 times sharper than steel
granite is another good rock it contains meatals(including uranium )but is very inert over short periods of geological time(it will take 60 years to leach any meatals
quartz is another good inert rock
slate is inert and is an interesting rock due to its form
waste glass its sometimes available from manufacturers of glass its just huge blobs of molten glass
anything else tends to be a bit of a grey area all these are perfectly safe

Death solves all problems: no man, no problem - joseph stalin
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post #12 of 13 Old 04-19-2007, 05:41 PM
Julie:

When I set up my aquarium I purchased lava rocks and wood.

The holes in the lava rocks have been enjoyed by my Red Tail Sharks, Yoyo's and (lastly but for sure not leastly) my Queen and Gold Nugget plecs. (and once by an angel ~ his extrication without death was an engineering marvel).

The lava rocks proved very beneficial during a disaster handling situation.

During one period when my "learning curve" was very, very steep (approximating y=x*100) I was going through pumps like "true believers" go through "Carter's Little Liver Pills".
One of my staff did not keep up with his pump replacement usage and I "wound up with" no pump and hence no biological filtration.

In order to deal this this adverse situation I "cranked up the air" to the air diffusers in the tank (which were installed for the aesthetics of the air bubbles) in order to increase oxygenation of the tank water as well as produce areas of laminar flow in the tank.

During the three days while waiting for the delivery of a new pump I did not observe any concentration of ammonia or nitrite in the tank water.

I believe that the ammonia and nitrite digestion bacteria which were present in the minute crevices and craters in the rock in the presence of the highly oxygenated water were the reason (as well as the bacteria in the small cracks in the wood).

TR
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post #13 of 13 Old 04-19-2007, 06:03 PM Thread Starter
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Thanks jones and daisycutter.

I'll look into both the flint and lava rock. The lava rock does seem to have its advantages as described. Hopefully since we're both in the UK daisy, the flint should be pretty easy to come by for me. I'll also try a few of the "home-made" ideas given as well. With all the suggestions I should be able to come up with something.

jones:

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During one period when my "learning curve" was very, very steep (approximating y=x*100) I was going through pumps like "true believers" go through "Carter's Little Liver Pills".
This is one of the most amusing wee sections I've ever seen posted - you made me laugh :D

Thanks again for the help everyone.
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