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Use opaque cover and a UV lamp in series with the pump. The cover will reduce the amount of light available for algae growth and the UV light will kill bacteria and algae that passes through the system. It is much cheaper than the SWG. It will not kill algae that cling to the pool walls, but you...

Do you have a main drain? If you do not have one or if is not in use than you do not have a propper circulation since the warm water will stay closer to the surface and the cold water will remain closer to the bottom of the pool. One must be sure that water in the pool is well mixed up in order...

Does Taylor ship to Europe?

Just keep the pH a little lower (7.4?) because at lower pH there is little risk of staining. A copper concentration under 0.5 seems to be safe anyway, therefore in my opinion it is not worth the effort to get rid of these metals at this low concentration. Still, sometimes it is better to spend...

Is the conversion bromine-bromide (under sunlight) affected by pH? What other factors might influence the bromine stability?

One has to remeber that pH is a logaritmic scale. Close to pH 7 a certain amount of acid will make a much bigger change than at pH 8.

CYA can be removed by melamine. It wil react with CYA and will produce a white powder precipitate - difficult ro filter out and remouve. SWG might be a better idea. Chlorine is produced by the SWG cell and all you have to do is to keep the pH under controll.

This summer we returned to our holiday home in south of France. We were pleased to find the swimming pool with clean water and only some algae at water line between the blanket and the pool wall and on top of the thermal blanket. Jasonlion corectly stated that UV lamp will sterilize only the...

You are better off with the muriatic acid since the PH down add sulfates in the water and in long run you might regret it. The hydrochloric acid is normally found even in human stomac so do not hesitate to use it. It is better for the pool and cheaper too.

To answer mas985. There are many studies for the flow gradient of a liquid close to a smooth wall. Just found one: http://physics.stackexchange.com/questions/109395/why-arent-airplanes-like-golf-balls. Close to the wall the liquid speed is almost zero. Still small molecules can diffuse these...

Thank you for your reply. I appreciate the time you spent to answer my questions. All is clear now.

If you decide to replace some water it is better to fill in with a hose close to the deep end of the pool and discard the excess water from a skimmer. Usually the fresh weater is colder and will say at the bottom of the pool while the last year water is warmer and will stay closer to the...

I think that proper circulation is vital for maintaining an algae free pool. If in some places the water does not mix because it does move out of there, then it does not even get the sanitizing agent. Moreover, close to the wall surface the water moves slow even in areas with good circulation...

I understand that ORP measurements are not reliable for determining the chlorine concentration in swimming pools and spas due to cyanuric acid presence. In case of using bromine for sanitizing a swimming pool or a spa and cyanuric acid is not present, is it then possible to use the ORP...

Thank you for your answer. All is clear now.

Best way to test the capacitors is to replace them. The motor will not start without them. Capacitors will degrade in time. Some faster some slower. Lifespan can be from 5 to 20 years. If you replace the capacitors and the motor does not start, than you have a mechanical problem.

110 - 230V? Distribution and commercialization rights? Other legal issues like patent rights?

Thank you for your input. Please correct me if I am not getting it right. MPS is an oxidizer and a week sanitizer. At higher temperatures acts faster and it might be OK to use it along with Nature2. MPS alone does not kill fast enough to be an effective sanitizer especially if used in swimming...

Recently a specialist installing a pH controller for my swimming pool said that he is only using active oxygen tablets once a week to sanitize spas. The question is: Is it possible to use only the MPS as a sanitizing agent since it is used to oxidize what bromine cannot?

Cover your swimming pool so as little as possible light will meet the water. This will inhibit the algae bloom and the chlorine level will be more stable.

Some remarks. The chlorine has a variable efficiency depending of Ph. The efficiency decreases with the increase of Ph so that above 7.8 has very little killing power. The closer you maintain the water to Ph 7.2 the better the chlorine can kill your algae. In every swimming pool there are...

Good points. Still, I know from my childhood experience that the saturated salt brine is perfect for a warm water spa. This was confirmed few years ago at a hotel in Grand Canarias. They had one. If they could do it, it means it can be done! Still it will be difficult to safely get rid of the...

Thank you for your comments. Yes you are right, this saturated salt water is very corrosive. Only titanium, plastics and few other materials can tolerate it. For sure it will void the warranty for this spa, therefore I will not do it the first year. Still the fee floating feeling and the health...

Thank you for your comment. You are right. Some algae and some bacteria might survive, but in the natural environment they had many years to adapt. I plan to keep the spa covered when not in use, therefore the algae will have little chance to develop. Without algae will be less chance for...

Hello everybody! I am new to the forum and I do not have a spa yet, but I plan to get one. I am reading a lot about the pool chemistry. Few years ago during a trip to Grand Canaria I came across a spa called Dead Sea Spa with high concentration of salt. I think that it might be a good idea to...

Our granddaughters are allergic to chlorine, therefore the bromine is the obvious alternative. The SWG is not a viable option for us. The cooper sulfate is not only an algaecide but also a very potent fungicide. It might create unwanted discolorations at concentrations bigger than 1ppm. The...

A dome. It an be loked, keeps evaporation low and water free of leaves and bugs.

We have purchased last year a holiday house in south of France. It came with a swimming pool (10X5X1.5m) - 75m3. The swimming pool is covered by a dome. The water was nice and clear when we bought the house, but sometime later, to my horror it turned into a green swamp. Last year I had no idea...