The HorizonTech Aquila coils fit into the Aquila Sub-Ohm Tank. Compatible Tank: HorizonTech Aquila Tank. Choose From E2 – 0.16 Ohm or P4 0.4 Ohm. We are one of the UK’s favourite suppliers of electronic cigarettes, e-liquids and next-generation e-cigarette devices, with a huge array of high quality accessories to match.