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Included with every Sentry, the darkness sensor suction cup is attached to the aquarium wall. When the aquarium lights go out, the sensor automatically starts the Sentry pumping at the preset rate. Click here to return to Sentry info. page.
ReefDosingPumps.com
12 New London Tpke.
Norwich, CT 06360Phone Toll-Free1-866-4-DOSING
1-860.892.0011
fax: 860.887.7339
email: Stan@Reefdosingpumps.com