Fluval Rubber Adapter for Ribbed Hosing, 304, 305, 404, 405 (2 Pieces) https://www.amazon.com/dp/B0002Z7V3W/ref=cm_sw_r_apan_i_7C4K2KB993EA2V9PQRF0?_encoding=UTF8&psc=1. Fluval Ribbed Hosing for 306/307 - 406/407 9.8Ft A20015 https://www.amazon.com/dp/B000256908/ref=cm_sw_r_apan_i_T799A2WJ5PYHRBFA82D1?_encoding=UTF8&psc=1. I picked up a couple of larger hose clamps at the hardware store because the ones it came with seemed a little small but this is all you need.