The Avast Marine CS1 Cone Skimmer Kit is already a great value for a cone skimmer but we were able to get a look at the “Stealth” cone the company shipped out to Reef Stock. Made from a smoky acrylic instead of your typical clear, the Stealth Cone skimmer will help literally keep your reaction chamber in the dark — preventing algae growth inside. With so many systems with refugiums and refugium lighting underneath, the Stealth Cone is a smart idea and one we wonder why we don’t see more of in the market. This is the only Stealth Cone out there as Avast has just started making these. Look out for these most likely to hit the market shortly.