This Tunze Nano Stream’s only job has been as a mixing pump for ESV’s B-Ionic 4 part Seawater system. So far this 6025 has mixed six batches of 5 gallons of water and one batch of 25 gallons and it couldn’t be any cleaner than if I had just pulled it out of the box. We’ve already shared with you how quickly and how clear the B-ionic Seawater mixes up. Being accustomed to expecting mixing pumps to turn solid white no matter how pure or cold the water is, it’s quite a surprise to see even the hot parts of this nano stream completely devoid of any precipitation. Perhaps the secret ingredient to the performance of B-Ionic Seawater is not so much as what is in it, as what’s not. ESV’s purification process of the two liquid components after they are mixed could be the reason why Cherry Corals, Greenwich Aquaria and Atlantic Reef Aquaculture all speak so highly of the B-Ionic Seawater. Imagine: if the mixing pump stays this clean, how much cleaner will our aquariums be? Follow the break for more pictures of this suspiciously clean saltwater mixing pump.