<http://bestaquariums.site/product/13w-submersible-light-with-timing-function-for-aquarium-water-clean-green-algae-clean-waterproof-clean-lamp-for-pond-fish-tank-sump-pump-13w/#product>
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"Feature:New upgrade: With timing function, it solves the problem of forgetting to turn on and off the light. It can be scheduled for 3 hours, 6 hours, 12 hours, 24 hours of circulation, for example, setting 3 hours, 3 hours per day, the other 21 hours is off, 24 hours a cycle.This water clean light help to clean the water and algae,such as Fish tank,swimming pool,pond, shoes,dog house clean and so on.Please Note that this light only clean the algae and green in the water,but can not clean the black algae attach on rock and tank.Easy to use:With two strong suction cups, it is easy for you to install and use it. And you can also adjust the position freely. Note: Please put the tube in the filter tank or filter groove of fish tank(you can see details in the picture which show the right install position).Warranty:If the product have any issues within 1 year,please email to us directly.We will replace or refund it.Please Note that this light only clean the algae and green in the water,but can not clean the black algae attach on rock and tank. IT is a Wrong way that many people use it as a decorative light in a tank with fish.  DO NOT expose the fish directly under this light for long time, Please install and place it in the filter tank or the other place that the light can not leak out. Specification: Voltage: 110V Power: 13W(10.5 Inch/26cm) Cable Length: 1.5 Meter/4.9 Feet This lamp can be matched or connectted with different pumpsPower Adapter: US PlugSplit type design for high safety &amp;amp; fix with strong suckers. Firm and Reliable Package Included: 1 XAquarium clean Lamp 2 XSuction Cups1XUser manual"
<http://bestaquariums.site/product/13w-submersible-light-with-timing-function-for-aquarium-water-clean-green-algae-clean-waterproof-clean-lamp-for-pond-fish-tank-sump-pump-13w/>