Pooled Energy also manages fresh water pools just as easily as saltwater, however, you may care to consider the following, especially as salt is usually more comfortable on the eyes than truly fresh-water pools. In reality, most ‘fresh’ pools are actually quite salty due to salt build-up over time.
There are also often misconceptions about ‘fresh’ water pools. Most people think that a liquid chlorine pool is a ‘fresh’ water pool with no salt concentration.
If you test the salt levels in so-called ‘freshwater’ pools, many of them are quite salty from accumulated salt from evaporation (tap water does contain salt), as well as from the salt that is included in liquid chlorine containers as a consequence of both the way it is made and the conversion that happens to liquid chlorine while it is stored. We often see ‘fresh’ pools with 1,000- 2,000 ppm (parts per million) of salt, with some at even higher levels. In those cases you may decide that the pool water should be diluted by the addition of tap water.
Saltwater chlorinated pools typically start at 3,500 ppm (where salt is generally not perceptible to taste), average around 4,500 ppm and don’t typically exceed 6,000-7000 ppm. For comparison, the ocean is ~35,000 ppm. The permissible salt level may be constrained by your equipment. Some salt water chlorinators require the salt concentration to be at least 6000 ppm. Gas heaters typically have a maximum salt level constraint with most being constrained to maximum salt levels of 4500 ppm. In no case should the salt level be allowed to fall below 3000 ppm as salt water chlorinators do not operate effectively below that level. Eyes are the most comfortable at about 8,000- 9,000 ppm, by the way and the closer you are to that, the more likely that your eyes will be comfortable.
If you have a saltwater pool, you need to know the type of salt so that you can add more when required. The types are:-
- Common salt (most pools),
- Magnesium salt (if you have sandstone or porous stone surrounds or want a softer water which is much nicer on the skin and hair),
- Mineral salt, which is a premium magnesium/potassium blend that is functionally the same as Magnesium but has a slightly different taste.
Common salt is widely available through hardware stores and pool shops. Magnesium or mineral salts can be purchased typically from pool shops and some hardware stores, or can be provided by Pooled Energy.
However, fresh water pools require chemical dispensing systems for liquid chlorine and acid, which must be periodically topped up. We recommend converting to salt water chlorination in most cases. Some 92% of Australian pools use salt chlorination as proof of its ease of use and efficacy. A saltwater pool with a chlorinator running Pooled Energy’s Advanced Water Chemistry offers the benefit of full automation without chemical tanks and dispensers. We recommend this as the cheapest and lowest maintenance solution for most customers.