Applicable environment: the water trough float valve is suitable for ponds, chickens, livestock sinks, aquariums, aquaponics, aquaculture, hydroponic tanks tanks Material: the mini float valve is durable with arms adjustable, made of hard ABS, will not corrode or rust No power or pump required: water float valve is suitable for low pressure gravity feed systems, leak free operation is achieved by hand tightening Spend less time filling and checking the water reservoir to protect plants from drying out It’s been designed for trouble-free operation so you can adjust and adjust it. #39;forget.