Search results

If you have a way to dispose of a saturated brine, you can add salt to this pool water. It will be fee of algae and will nor freeze. It will be safe to use as it is no patogen that will survive for long in saturated brine. Salt is not expensive, but you will need a lot in order to saturate the...

You should consider deep washing your filter. Look for the post describing the procedure.

Then put much more copper sulfate in the pool water and let it be. The pool might get stained but you will have to deal with that when you reopen the pool. Later on you will have to drain and refill when you restart the pool. Copper is an excellent algaecide and is very effective against fungi...

Fit an opaque cover over the pool. It will reduce drastically the amount of light available for algae growth. It will also keep the water free of debris. Install a UV-C lamp in the return line. Have it ON together with the circulation pump. Add 0.5 ppm copper sulfate to the pool water. At this...

Since the 650mV reading is just a reference point for the controller, I think it is better to just add chlorine to the desired ppm, read the ORP and set the controller to keep it to that level. In this way you have calibrated the controller loop to your swimming pool. This procedure HAS TO BE...

My advice to you is not to drain yet. First try to operate the pool ignoring that you have a bromine banc. Bromine tablets add DMH to the pool water and that acts like CYA in a chlorine pool. Measure how much you still have at the end of the day. Every pool is different and DMH is (for most of...

A UV light bulb has a life span of around 9000 hours. Turning the lamp on and off daily is the norm. Turning the lamp on-off more than once every day may reduce the life span of the lamp to some extent (burning hours). If you are going to have the lamp on all the time you will have to replace...

Just keep pH under control. Higher is the pH bigger the risk of staining the surface. Best if you lower the pH in the 7.2 - 7.5 interval. Did he lower the water level? If yes the spring opening will dilute the copper concentration. Some copper will be lost in winter together with the dead algae...

Zinc is available as a spay panint as well. Clean the rusted area and spay a zinc layer before any other protective paint.

I advise you to use 1ppm copper sulfate. It is a very efficient algaecide. It may stain the liner at high pH, but that is not an issue since you will replace the liner anyway. Chlorine is efficient as well, but it is a short term treatment. Copper sulfate is a cheap and convenient treatment...

You can drain and refill the pool at the same time. Have the inlet hose weighted close to the deep end of the pool and a pump closer to the surface. Usually the pool water is warmer and will be stay separated from the fresh water as long as the filtration system of the swimming pool is turned...

The amount of chlorine lost in one day is proportional with the concentration: bigger the initial concentration, bigger the amount lost, but as a % it will be similar. With respect of balancing the alkalinity of the chlorine, you need around 100ml hydrochloric acid 31% for 1liter of 8% chlorine...

Good point Jason Lion. Still I wander if the bromine will eliminate the bromamines or if the chlorine used for generating bromine can eliminate them. I believe that bromamines are less volatile than chloramines, remaining in water much longer.

Thank you Chemgeek for sharing these facts with us. Looking at these graphs one can easily see that these photoreactions are quite slow. In my filtration system a particle in the water will pass through the UV lamp in about 6 seconds. Since I run the system with one turnover per day, I can say...

The anode zinc is called a sacrificial anode. It is corroded in the water instead of the steel that is in contact with it. It is widely used in boats. Zinc is also used in modern cars as a supplemental layer providing rust protection on the same principle. Stainless steel is adversely affected...

The mentioned data in fact corroborate with the fact? that bromamines are efficient sanitizers while chloramines are not. Anyway chloramines are volatile and might be up taken by inhalation, while bromamines should be less volatile, therefore absorbed only through skin. This is in fact more...

Cwuffman: 40km north of Toulon. For me a cover is a must. Not only it helps in the struggle against algae, but it helps keeping the pool clean and the water warm. I use it even though the pool is fitted with a safety dome.

CYA will react with melamine, and reaction product is a prcipitate. Some people have done it, but it is a messy process if you do it in the pool. I think it is better to try to add a little in the skimmer and see what happens (add a little and measure later), then add a little more and measure...

UV light is a proved safety backup that bring the benefit of eliminating the chloramines. The increase chlorine consumption can be reduced by putting the UV light on a timer. I think is best to start the lamp when you enter the spa and stop it sometimes later. The unpleasant smell is the vapors...

If your tap water is colder than the pool water, just have the tap water hose end weight placed at the bottom of the pool and evacute the water from the skimmer. In this way you are creating a separation layer in the pool between the new and the old water. In this way you evacuate only the old...

Cover your pool when not in use. An opaque cover will reduce the chlorine demand and therefore the buildup of salt will be reduced as well. Drain or backwash when is raining if possible.

A UV lamp is for sure an "add on" as pooladdict stated. But my opinion is that a backup system that cost less than 1% of the swimming pool investment cannot be called a wallet lightener. I agree that a SWG is a better option for people with eczema, but if one has a septic tank and not the...

UV light will kill more than 99% of algae, viruses, bacteria and fungi that passes through the filtration system, so killing is practically instantaneous. Still as a whole the filtration system is not fast enough to allow the UV lamp to be considered a primary source of sanitation for the...

I suggest installing a UV lamp. It will keep the water sterile even if you do not add any chemicals to the pool. The surfaces of the pool are not sterilized, but with a good water circulation the pool will stay clean. It has been argued that this UV lamp will not provide adequate sanitation on...

No. Some chlorine will be vented and therefore lost for the spa. Combined chlorine will be either vented or destroyed by UV light (not shure what happens to the byproducts). With time pH will increase and one need to bring it down with chlorhidric acid and salt concentration will go down and it...

If you have a opaque cover use it when you are not using the pool. Green algae growth rate is proportional with the amount of light available. When you use the cover you reduce the chlorine loss due to solar radiation as well.

For a pool of your size a uv lamp costs in europe less than 800€. One does not run the filtration systyem 24.7 for the sake of the UV system since it cannot be your primary sorced of desinfection. The UV lamp will not sanitise the surfaces of yor pool, but will sterilize 60% of the water in one...

Upgrade your pool with a UV lamp. You will never have to SLAM again as long as the UV lamp is working.

I never brush, but i put to work the robot every other day ( at least ) when I am at the property, otherwise nobody is there to do it. The UV lamp keeps the water sterile and that is all that I need. Water is nice and clean even nobody is there to add chemicals. Still I have an automatic pH...

It is possible to use also a heat pump. With the new ones you will get 4-5 kWh of heat for each kWh taken from the mains.