What is the reason for needing a solenoid? How will the system run without one?

The solenoid will control the co2 output. When turn off the solenoid, there will not be co2 out from the generator. If without the solenoid, the co2 will keep output.

How long do I have to wait before using the set up in my tank?

You can use it as soon as the needle is in the green.

How can i replace the needle valve. Mine is broken alternating between full throttle or 0?

This isn’t a replacement part for the co2 generator it’s valve for a co2 tank. I recommend contacting the manufacturer.

For a 4l co2 generator, should i put in 600-800 gram each of material a&b? also do i pour in 300ml water or more? i've read different opinions online.

I use 600 ml for the material each and 800 ml of water I freeze the water in try"s that make long round ice cubes the cube are made to put in water bottles

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FZONE 5.5L Aquarium CO2 Generator System Carbon Dioxide Reactor Kit with Regulator and Needle Valve for 600-800g Raw Material

Product ID: 524278183

Details

Brand
FZONE
Item Form
Liquid
Liquid Volume
5.5 Liters
Manufacturer
FZONE
Unit Count
1.00 Count

⏱️12V DC solenoid timer compatible

⚙️Precision needle valve with bubble counter

🛡️1.5mm SUS304 steel, 25% thicker for max safety

289195CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Elevate your aquarium game with precision CO2 control—because your plants deserve the best!

BACKFLOW PROTECTION - Integrated check valve prevents water from damaging your CO2 tank, extending equipment life and reliability.
COMPLETE DIY SYSTEM - All-in-one 5.5L kit includes regulator and needle valve—just add your own citric acid and sodium bicarbonate to start thriving aquatic ecosystems.
PRECISION CO 2 CONTROL - High-accuracy needle valve with built-in bubble counter ensures steady 1 bubble per second flow, optimizing aquatic plant growth.
CUSTOMIZABLE CO 2 INJECTION - 12V DC solenoid compatible with timers lets you schedule CO2 release, syncing perfectly with your aquarium’s light cycle.
INDUSTRIAL GRADE DURABILITY - Robust 1.5mm SUS304 stainless steel bottle withstands up to 1137 PSI pressure for ultimate safety and longevity.

The FZONE 5.5L Aquarium CO2 Generator System is a professional-grade DIY kit featuring a thick 1.5mm SUS304 stainless steel bottle capable of withstanding pressures up to 1137 PSI. It includes a precision needle valve with an integrated bubble counter and check valve to prevent backflow, ensuring accurate and safe CO2 delivery. Designed for 600-800g of raw materials, this system supports 12V DC solenoid timers for customizable CO2 injection schedules, making it ideal for millennial aquarium enthusiasts seeking reliable, efficient, and safe plant growth solutions.

Specifications

ASIN	B08THYYFMN
ASIN	B08THYYFMN
Best Sellers Rank	#34,342 in Pet Supplies ( See Top 100 in Pet Supplies ) #97 in Aquarium Air Pump Accessories
Brand Name	FZONE
Customer Reviews	4.4 4.4 out of 5 stars (971)
Date First Available	February 23, 2023
Item Form	Liquid
Liquid Volume	5.5 Liters
Manufacturer	FZONE
Manufacturer	FZONE
Manufacturer Part Number	FZ-4LKIT-US
Package Dimensions	17.2 x 10.94 x 6.97 inches; 7.32 Pounds
Target Species	Fish and Plants
UPC	764595876395
Unit Count	1.00 Count

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