A CO2 checker is an essential tool for monitoring CO2 levels in the aquarium. The CO2 checker is a reservoir designed to contain an indicator solution (not included) and an airspace.
When the drop checker is submerged in the aquarium, the carbon dioxide will out-gas from the aquarium water into the airspace of the drop checker and will eventually be absorbed into the indicator solution.
The carbon dioxide gas will seek a point of equilibrium between the indicator solution and the aquarium water. As equilibrium is achieved, the color of the indicator solution inside of the drop checker will change based on the concentration of CO2 in the aquarium water.
Professional packing and fast shipping
Through our long-term relationship in a long-standing partnership with UPS, FedEx, DHL and many other top global carriers we can offer various shipping options. Our warehouse staff is highly trained to pack your goods precisely according to the specifications we provide. Your items will go through an exhaustive examination before they will be safely packaged prior to being shipped. We ship to thousands of customers every day across various countries. Our dedication to becoming the largest online retailer in the world is shown by this. The warehouses are located located in Europe as much as they are in USA.
Note: Orders that include more than one item are assigned a processing time depending on the item.
Before shipment, all ordered items will be thoroughly examined. The majority of orders are shipped within 48 hours. The time to deliver varies from 3-7 days.
Returns
The inventory is constantly changing and we cannot fully manage it due to the fact that several parties are involved, including our warehouse and factory. Stock levels can fluctuate at any time. It is possible that the stocks could be depleted after your order has been processed.
Our policy is valid for a period of 30 days. We are unable to replace or refund your purchase if it has been 30 days since the purchase.
You are able to return an item if it is unused and still in the same condition as the day you received it. It should also be in its original packaging.
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