This is a high quality replacement vessel for the Discovery Store Tranquil Tide (Silver Base) and Wave F/X Wave Machines (Gray and Black Bases). YOU MUST SPECIFY WITH YOUR PAYMENT WHETHER YOUR ORIGINAL VESSEL HAD DOLPHINS OR NOT AS THE ADAPTERS ARE DIFFERENT. Please ask questions prior to purchase. You can compare the Hughes Wave Fluid Formula to the old Lava formula in the video below. Made in the USA with museum case quality construction and a visually superior fluid formula, the vessel measures 16" in length and 3" high. I have designed a 3D printed adapter to fit my vessel to these machines and the performance is simply OUTSTANDING. The quality and wave response is like nothing ever seen in a wave machine previously. A variety of colors are available and you are sure to be pleased with it. Please see the color chart in the photos. The "UV" colors glow in a dark room with a fluorescent black light fixture for an awesome and fun effect! These fixtures can be found right here for minimal cost. NOTE: UV Acid Orange is no longer available, but a standard Sunset Orange is and it looks the same in natural light. PLEASE READ: You must include a note in your PayPal payment indicating which color you would like from the chart. If no note is included, the default color is Deep Ocean Blue. There is a 10-15 business day build time before this item will ship to you. This time is necessary for the air to be purged from the fluids. Please factor this lead time in if it is a gift or needed by a specific date and ask any questions you may have prior to using Buy It Now. UPDATE ON THE UPCOMING HUGHES WAVE MOTION MACHINE: I am in the process of finishing the prototype of the first motorized Hughes Wave Motion Machine. If you would like to be added to the list of potential buyers for the first production run, please visit my Facebook Business Page or www.wavemotionmachines.com and send me a message. The machines will be 18" units. There are currently no motorized bases available for any of our products. We can service any wave machine and we also offer replacement vessels and fluids for all Lava Simplex and Lava Lite LLC machines. All Products and Services For Sale 16" Hughes Replacement Vessel for Tranquil Tide and Wave F/X Machines: Wave FX and Tranquil Tide Wave Machine Upgrade Vessel www.WaveMotionMachines.com - YouTube Video will open in a new window [isdntekvideo] 30" Hughes Replacement Vessel for Lava Pacifica (See other items link above.): 30" Lava Giant Pacifica "The Wave" Machine for HBO Series- www.WaveMotionMachines.com - YouTube Video will open in a new window [isdntekvideo] 22" Hughes Replacement Vessel for Lava Atlantis (See other items link above): Lava Giant Atlantis Wave Machine Restoration Service www.WaveMotionMachines.com - YouTube Video will open in a new window [isdntekvideo] Hughes WaveCell (See other items link above): Hughes WaveCell Lava Wave Machine - YouTube Video will open in a new window [isdntekvideo] Hughes WaveTube (See other items link above): The Hughes WaveTube- Lava Wave Machine - YouTube Video will open in a new window [isdntekvideo] Hughes Replacement Vessel With Hughes Fluids (See other items link above): Custom White Base Lava Wave Motion Machine - YouTube Video will open in a new window [isdntekvideo] Hughes Wave Fluid Formula Upgrade for Lava Wave Machines (See other items link above): Hughes vs Lava Wave Motion Machine Fluids - YouTube Video will open in a new window [isdntekvideo] If your order is required by a specific date, please contact me prior to purchase to discuss it as your order can be expedited. Please note the handling time in the listing.