Tropical Fish Keeping - Aquarium fish care and resources (http://www.tropicalfishkeeping.com/forum.php)
- Beginner Freshwater Aquarium (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/)
- - fun fact about rocks (http://www.tropicalfishkeeping.com/beginner-freshwater-aquarium/fun-fact-about-rocks-4690/)
fun fact about rocks
uranium-238 occurs naturally in low concentrations in 98% of all granite and quartz :D
just a little something i learned an decided to share with anyone listening
Thanks for sharing - never know when that information will come in handy :tongue:
im full of pointless information :D
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