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Old April 19th 06, 03:22 PM posted to rec.crafts.pottery
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Default Making clay caves for aquarium fish...

Hello,
I'm an aquarist, and many fish like to live or breed in shelters,
referred to as 'caves'.
Normally shattered plant-pots or terracotta tubes are used, like
this...
http://www.planetcatfish.com/images/...sc/sw/hz/7.jpg
....but it would be very useful to be able to make 'custom' caves for
the fish.

When I've looked in to this in the past, the need to use a kiln has put
me off, but now I see there's air-drying clays, as well as low-fire
clays and polymer clays you can fire in your household oven.

My questions a are air-drying/low-firing clays or polymer clays
non-toxic after firing, and would they survive (ie not fall to pieces)
if kept constantly in water for several years?

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