The ProGrow BVC is a bubble counter with an integrated non-return valve. Thanks to the use of durable materials such as aluminum and high-quality transparent material, you do not have to worry about damage to the meter or its breakage, as is the case with glass products. ProGrow BVC is easy to fill with water. Thanks to the use of universal couplings, the product is suitable for use with both polyurethane and silicone hoses with a standard diameter of 4 / 6mm. Take care of your aquarium plants with ProGrow!