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Useful Tools, Gadgets and Widgets What tools and gadgets do I need for my aquarium?
- Backup power supply Refractometer Suction hand cups  Hand cups use vacuum to lift and carry loads. A manual pump removes air from between the rubber pad and the contact surface. A red line on the pump's plunger serves as a vacuum indicator. A check valve allows the user to repump the cup without removing it from the contact surface. A release mechanism allows the cup to disengage completely. PAR meter |
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TDS meter |