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Source for 7.5W, non-thermostatic heaters
Karen Randall mentioned recently the use of small, 7.5 Watt heaters (w/o
thermostat). I remember several years ago when she initially mentioned the
use of these items as one possible method of causing a very slow circulation
of water within a substrate.
But WHERE do you obtain such small heaters? I can't see any such item listed
in the online catalogues of any of the aquatic mail order houses. anybody
have any idea of a current source?