- Backwash Valves
DE Filter Push/Pull Valve (Backwash) Position: When the push/pull handle is in the up position, the filter reverses the flow allowing the dirty water to go out the waste line or backwash hose. DE Filter Push/Pull Valve (Filter) Position: When the push/pull handle is in the down position the filter is filtering the water and returning it to the pool.Saturday, December 06, 2008 8:34 PM
- Ball Valves
The disadvantage to these valves is that they are not serviceable, that is, they cannot be opened up to make repairs or clear clogs from the valve. The handles on ball valves tend to break rather easily, and they can also be somewhat difficult to turn, especially if installed in an awkward position.Saturday, December 06, 2008 8:24 PM
- Biguanide Treatment
Biguanides have been reported to be easier to use, with less chemical level testing, and less adding of chemicals. The water doesn't smell of chlorine of course, and the reduced surface tension gives it a smoother feel. It doesn't degrade with sunlight, temperature, or changes in pH levels like chlorine. At recommended concentrations, biguanides won't irritate the skin or eyes and can't corrode pool equipment.
Saturday, December 06, 2008 8:29 PM
- Biguanides to Chlorine
Allow your levels to drop down very close to zero. You may want to run your filter longer and add an algaecide (not baqua-cide) when levels begin to get low. This process may take several weeks. A good time to switch may be in the spring, after a winter of not adding any baquacil or soft swim. I have heard reports of others who have said that they simply let their pool go very green, made sure the baquacil levels were zero and then shocked it with chlorine...a simpler approach to be sure.
Saturday, December 06, 2008 8:33 PM
- Bond Beam Repair
On In-ground gunite pools, the coping is the capstone for the beam, and is used to finish the pools edge and bring it up flush with the pool deck. Pre-cast concrete coping with a bull-nose front edge has been the standard for many years. Modern designs are making use of bull-nose brick coping in many colors and textures. Flagstone is also a popular choice.
Saturday, December 06, 2008 8:39 PM
- Catalytic Sanitation
The manufacturer is not marketing the Claritec System as a stand alone sanitizer. They suggest that it greatly reduces reliance on and enhances the effectiveness of traditional methods and/or other alternative methods such as ozone or sodium tetraborate. Its performance is enhanced with the use of enzymes. Fountainhead recommends the periodic use of a non-chlorine shock, and a polyquat algaecide, used in their Non-Chlorine Recipe. The Claritec can also be used with a small amount of chlorine (.4 - .6 ppm) quite effectively. This is outlined in their Low-Chlorine Recipe.
Saturday, December 20, 2008 4:03 PM
- Chemical Feeders
Chlorinators and chlorine feeders make sanitizing your pool a breeze. Just fill the chlorine feeder with chlorine, and choose your setting. The idea of not having to add chlorine to the pool for a couple of weeks is very appealing to many people. The type of chemical feeder you use depends on the type and size of pool you have. Below is a summary of the major types of chlorinators available for the residential market.
Saturday, December 20, 2008 4:04 PM
- Chitosan Water
Chitin (pronounced kite-in) came into being in the 1970's when the EPA ordered fishing companies to stop dumping the shells of crabs and lobsters back into the ocean. Researchers discovered that the chitin contained in the shells had properties that could be applicable in a variety of industrial uses. Similar to cellulose, chitin is a naturally occurring polymer. It is also the only naturally occurring polyelectrolyte.
Saturday, December 20, 2008 4:05 PM
When any type of chlorine is added to water, it usually forms hypochlorous acid (HOCl - the most powerful killing form of chlorine in water) and hypochlorite ion (OCl-), a relatively weak form of chlorine in water. The percentage of HOCl and OCl- is determined by the pH of the water. As the pH goes up, less of the chlorine is in the killing form and more of the chlorine is in the weaker form. The total of HOCl and OCl- is the free available chlorine.Saturday, December 20, 2008 4:17 PM
- Chlorine Chemistry - Part I
Chlorine was first discovered in the sixteenth century, and today is one of the most produced chemicals in the US, finding its way into a multitude of products. Chlorine is so deeply inter-twined into industry that finding alternatives would indeed change our daily lives.
Saturday, December 20, 2008 4:17 PM