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by gordon lowe
my experiences with local marine aquaria
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by gordon lowe
i have managed to obtain a limited quantity of the solenoid valves as used on the auto shut off caps for the AWC
suitable for 106/88/53/20 litre
a...
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by gordon lowe
a fresh look at the optical water level sensor, often known as infrared.
the sensor i have used originates from china (as do most) and has been
re...
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