General Hydroponics Floralicious Bloom Size:10L The 15 ft remote sensor The 15 ft remote sensor allows you to measure the CO2 levels of your garden exactly where you need to measure them It is designed for use with various kinds of crops such as annuals we only aim to cover the cost) we will often even try to share and or absorb what we can and not ask for additional Shipping payment if when we can avoid it ) Apps can handle and give us somewhat accurate shipping charges for so PLEASE ONLY ORDER THIS ITEM IF you are flexible about shipping charges your shipping charge will likely need to be adjusted and an additional charge required just to cover the cost (we do not make money on shipping