Calcium reactor

[scippiee]

Is a used Aquarium Engineered Calcium reactor rated for 350 gallons, in good condition with the controller, co2 bottle and regulator worth buying for 500.00?

 

[Subsea]

Is a used Aquarium Engineered Calcium reactor rated for 350 gallons, in good condition with the controller, co2 bottle and regulator worth buying for 500.00?

Not familiar with that vendor. That seems expensive, but I made my own with 4”pvc.