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temperature monitor
monitors temperature in fish tank and sound alarm if tempature becomes unsatisfactory | |
is cased in a plastic box and will be attached to side of the tank. if temperature becomes too high or too low and LED will lflash and an alram sound and a relay will trun off the heater
[link]
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Thermostatic aquarium heaters have been available for as long as I can remember. |
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I think bristolz just wants to be able to Iflash everyone. |
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The answer to this is to breed fish that can live in water over a wide range of temperatures. This may, of course, cause difficulties to those who insist on boiling their fish for supper. |
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