2000-19000 is recommended for measuring LUX in aquarium

Health-conscious individuals seeking maximum savings on filter replacements

"I run this unit 24/7 and have not had any problems

chlorine and more

EC electrode: MA812/2 (included)

Autopilot Dual Outlet 7-Day Grounded Digital Programmable Timer, 1725W, 15A, 1 Second On/Off professional pH tester 2000-19000 is recommended for measuringProduct Details Using a timer to automate your lighting adds convenience and encourages productive growth with consistent hours of light. Timers are also essential for many hydroponic system applications. This model has two outlets. Features 1 second on off Up to 8 on off cycles per day Controls two outlets simultaneously 15A 1725W UL listed FOR MORE THAN 8 ON OFF CYCLES PER DAY Specifications Shipping Weight 0. 51 lbs. Package Dimensions 7. 50L x 5.