CO2 can balance your aquarium to optimize plant growth Aquatic plants can be challenging to bring out their optimal growth and color. Aquarist that want to provide these optimal conditions for demanding plants, CO2 injection along with high intensity lighting and fertilizers can make your tank come alive. These are essential factors governing the speed of growth and health. Fzone FZ-0109 aquairum CO2 regulator design for US paintball tank! Designed for paintball tanks, connect to paintball CO2 tank, no adapter required, no assembly required.Dual gauges allows for a more precise reading of inner tank pressure and working output pressure.Use with a timer, solenoid valve allows for CO2 to be switched on/off at defined times, e.g. to sync with the aquarium lighting.This regulator has a high-quality aluminum body and stainless steel diaphragm for long-term durability. Solid material used with dual gaugle. Oxidation treated aluminum alloy body and stainless steel diaphragm for long-lasting durability and dependability.Needle valve made of copper, easy to adjust your CO2 flowrate low to be 0.3bps.Dual gauge easy to read your cylinder inner pressure and working pressure. OTS Mini DC 12V Solenoid Valve, High Performance, Cool Operating Temperature OTS 12V DC mini solenoid valve, safer than AC solenoid.Use with a timer, solenoid valve allows for CO2 to be switched on/off at defined times, e.g. to sync with the aquarium lighting.Red LED on/off indicator - the operation (on / off) of the solenoid valve can be confirmed by the red LED.Energy saving - low power consumption: 0.4 watt only. keeps the solenoid cool to the touch during operation.No noise - without buzzing or humming sound.High quality model - OST brand, special structure for long-lasting durability and dependability. Precision needle valve for fine tuning release of CO2 Needle valve made of copper, easy to adjust your CO2 flowrate low to be 0.3bps.Bubble counter included. you can read your co2 flow rate. Bubble counter with check valve function, stop water backflow to bottle.Fits standard 4/6 mm ( 3/16" inner diameter ) CO2 proof tubing.High quality model - OST brand, special structure for long-lasting durability and dependability. What's in package Paintball regulatorBubble couterPower adapterPower cable Fzone Paintball Regulator Solid matel meterial, not plastic.Regulator, bubble couter, solenoid needle vlave all in one.Newest DC mini solenoid, high performance, cool operating Temperature ONLY for paintball tank