• Models requiring WINTER SOLAR HEATING may cost more, depending on location.
  
• If for whatever reason you are unable or unwilling to use solar panels for heating, we will provide you with a GAS HEATER, an ELECTRIC HEATER or a HEAT PUMP, at nominal cost, discounting the declined solar collector.
• If you would like the TANDEM SWIM SYSTEM, which may enable two swimmers to carefully swim side-by-side, please add $250 for another RiptideTM trainer, shoes (size?), and associated hardware.
  
  BULL-NOSE COPING: This custom-bent and welded half-round aluminum liner holder and receiver ("Cinderella CP-2" see profile here: Click here ) will enable you to pour a concrete surround reaching the edge of the pool, or to provide an end cap to any boards you may use to deck the area around the pool. $1000 additional. The standard edging we use is their VM-1 liner extrusion.
  MODIFIED DEPTH: If, for whatever reason, you would like a pool with a modified depth, please discuss your needs with us. Bear in mind, though, that you are not likely to need a deeper pool unless you wish to do submerged exercises standing up.
  POOL COVER: For an ordinary winter cover, any good tarp or above-ground pool cover will do as long as it is kept de-watered. Safety covers, spring-loaded or automatic, are available, quote upon request. Please provide information on your particular installation so we may offer you the correct configuration.
  PHOTOVOLTAIC OPTION: Information on request, as specs depend on individual configuration.
  CHEMICAL-FREE ALTERNATIVE PURIFICATION: Such a thing does not exist. That being said, there are number of options for killing unwanted organisms in the water and eliminating pollutants. Chlorination is the simplest, cheapest, and safest method known. Done properly the water will be and feel pure, clean and odorless. Salt water chlorination is the best and most painless way to accomplish it. That is why we offer it as standard equipment. It is careless under- or over-chlorination that is to be blamed for the problems at times experienced with chlorine.
  
  
• One alternative to chlorination is to use metal ionizers to kill organisms. Dissolved copper will kill algae, and dissolved silver will kill bacteria. The problem with this system is that it is slow (that is, the kill is not immediate) and it does not get rid of other pollutants. You still have to apply more chemicals to the water, oxydizers known as "shocking" agents such a potassium monopersulfate or concentrated hydrogen peroxide solutions. None of this is "chemical-free."
• There are also alternative chemical systems using complex organics such as biguanides. They are expensive, introduce yet more chemicals into the system, and are comparable to the ionizing systems in complexity, minus the metals.
• Then there is ozone. Ozone -- touted as "natural" (so is uranium) by many manufacturers of such devices -- while good in the stratosphere is actually a dangerous pollutant at ground level, even at levels less than 1/10 of a part per million! You DO NOT want to breathe any of it. But, it is a supremely effective purifier when dissolved in pool water. The only hitch is that the devices needed to properly ozonate even a small body of water, such as the SwimergyTM Swim System, are expensive, and they need to operate 24 hours a day in order to offer good protection (ozone, at best, has a half-life of 20 minutes in water) thus multiplying your electricity use by a factor of anywhere from 3 to 12 aside from the current draw of the unit itself. They also have to be used together with other devices which remove all traces of undissolved gas from the water before it is returned to the pool, especially in indoor installations. Both the ozone generator and the de-gassing units have to be serviced annually, at a not insignificant cost. But they will work well if properly sized, and we will be happy to quote you an ozonification system if you so desire, one that will be adequate in residential use. But please be aware that if you need a system to ozonate the water to commercial specifications (minimum ORP factor of 650 millivolts everywhere in the pool at all times) the cost of the ozone unit will exceed the cost of the pool.
  
  
• If the pool will be used in an in-ground installation, you will need an optional IN-GROUND POOL LIGHT KIT. This option consists of a quartz/halogen light, a niche and a 12 volt transformer. The total cost for the kit is .............. You will then need to run conduit (not included) from the niche to the transformer and from the transformer to the 110 VAC power supply. All this in accordance with local electrical codes, which can be stringent when it comes to underwater lights.
  
  UNDERWATER SPEAKERS: Various types are available, and can be connected to a stereo or an iPod amp. Let us know what you are looking for.
  DOME: We do not at this time offer a dome, though we are studying the possibilities.

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Swimergy^TM Swim Systems
90-01 31st Ave
Jackson Heights, NY 11369

phone: 212-674-4567
e-mail: swimergy@gmail.com