WYIN ZRDR K303C Magnetic Solenoid Check Aquarium Bubble Counter
High-precision CO2 regulator with durable brass construction and magnetic solenoid for reliable on/off control. Features a crystal-clear acrylic bubble counter for accurate CO2 monitoring and adjustable flow rate. Premium ceramic disc valve ensures leak-proof performance, while the compact design fits most aquarium setups. Ideal for planted tanks, marine ecosystems, and aquatic research labs. Industrial-grade solenoid operates silently with low power consumption (12V DC). Includes integrated check valve to prevent backflow, extending equipment lifespan. Perfect for hobbyists and professionals seeking precision CO2 management. Bulk discounts available for commercial aquaculture or retail resale. Ships globally with wholesale pricing.