Contact Us Add to Favorite Welcome to Elegant Wings Contact Us Add to Favorite Fast Shipping Hassle Free Return Money Back Guarantee Authenticity Guarantee Baoshishan Aquarium Co2 System 2L, Upgraded External Threaded Co2 System Item Description Thread Variation for Hassle Free Use -- Our aquarium co2 system upgrades from internal thread to external thread to fit more raw materials without residue. At the same time, the sealing is enhanced to prevent gas from escaping danger and blocking, ensuring smooth operation. So you can focus on your aquarium Enhanced Safety with Dual Switch Valve -- New main valve switch gives you full control of the CO2 generator. Worried about gas leaks during reactions? Just close the main valve. In addition, an auto - pressure relief valve kicks in at 35KG. Double layer safety keeps your aquarium plants safe and gives you peace of mind Water Injectable Bubble Counter -- Our upgraded bubble counter lets you add water while aquarium co2 generator is running. No need to turn off the gas or remove the equipment. Paired with the fine tuning valve, adjust the size and exit speed of bubbles. Keep co2 levels stable for growing plants Durable Build -- Co2 generator for plants is made of 304 stainless steel, It's durable, stable, safe, and high pressure resistant. Can accommodate at once with a 200g capacity for both citric acid and baking soda, expect consistent CO2 for healthier, lusher plants Complete Co2 Aquarium Kit for Easy Setup -- We've got everything you need: cylinder, valve, 3-stage filter, bubble counter, solenoid valve, base, 2.7" stainless steel atomizer, check valve, 78.7" air tube, silicone funnel, snap-on suction sucker, syringe, and spare sealing rings. Saves you the hassle of scouring multiple stores for individual component purchases Tips for All Users -- Suggest using rectangular tank within (23" L 12 "W 15" H)/231=17 gallon; Calculated at a rate of one bubble per second, if left open for 24 hours, the gas reflected at a time can be used for about 15 days (if left open for 8 hours per day, it can be used for 45 days at a time) About us Customer service is our top priority! Please be sure to read the description thoroughly to make sure that this is the item you want before making a purchasing decision. If you have any questions about this item, please contact us via messages before placing your order. We make every effort possible to accurately describe and depict the items. Please be aware that slight variations in color may be due to differences in lighting and computer monitor resolutions. All items are in stock at the time of listing however, in the unlikely and unforeseen event that we are unable to fulfill your order through any of our networked warehouses, we will notify you as quickly as possible and offer you a 100% refund on your purchase. Thank you for shopping with us. We appreciate your business! Payment PayPal is our preferred method of payment. If you do not have a PayPal account, all major credit cards are gladly accepted through PayPal as the payment processor. PayPal offers great buyer and seller protection. Your order will be processed pending receipt of cleared payment through PayPal. Sales tax may be charged depending on your location. Shipping We provide fast, free shipping. Most items are shipped within 3-5 business days of receiving cleared payment. We ship to the lower 48 contiguous United States only. We do not ship to P.O. Boxes or APOs. Standard Shipping is ALWAYS FREE! You will be notified via messages as soon as your items ship. Special Notice for Freight Items: If an item ships via Freight (Truck) Delivery, a valid phone number will be required so that we can contact you to schedule delivery. The item may be delivered with curbside delivery. An adult signature will be required. Please be sure to have available help on hand to assist you with moving the item to the desired location in or outside of your home. Freight items must be inspected upon delivery. In the unlikely event that damaged is observed, you MUST refuse delivery and note the damage on the shipping receipt and send it back via the Freight carrier. Returns will not be accepted on Freight items after they have been delivered, inspected, and the driver has left the premises. Returns We offer a 30 day return/exchange policy for most of our products. You can request a refund if you are dissatisfied for any reason with your product. (Restocking Fee May Apply). Only factory defects are accepted as a reason for a return. In the case of factory defects, if available, we will replace the product for you. When returning an item, it must be in all of the original packaging and include all of the original accessories or items that came with it. The item and package should be in original and perfect condition. You will be required to cover shipping on the return of non-defective items. All returns MUST be done within 30 days of date of purchase. Please note that we cannot give refunds or replacements after the 30 day limit has expired. When sending in a return, please note that it can take up to 7 business days for the return to be processed. We do our best to process as quickly as possible. We are extremely fair, and in the rare event of something out of the ordinary happening with our products or shipping, we will gladly work with you to find a fair resolution.