Setting up a saltwater reef tank? Water flow is key for healthy corals, and these Jebao TW10 wave makers are a popular choice. You get two pumps plus a controller in this pack – both brand new. The brand is listed as QPOND, but they're Jebao TW10 models (sometimes called TW-10). They're powerheads designed to create strong, adjustable water movement in your aquarium, mimicking ocean waves and preventing dead spots. The controller lets you set different modes – maybe constant flow, wave pulse, or alternating between the two pumps. They run on 110V, so perfect for US outlets. These are submersible pumps, so you mount them inside the tank with suction cups or magnets (check what's included). Great for tanks where you need extra circulation beyond the return pump. Helps keep detritus suspended so your filter can grab it, brings nutrients to corals, and keeps fish swimming happily. The TW10 is a reliable workhorse in the hobby – not the absolute top tier, but great value for the money. Perfect for medium to large reef setups. Just make sure your tank size matches the pump's flow rating. A pair gives you lots of flexibility in positioning. Get that water moving and watch your reef thrive!