The Amount of Activity in your Pool – How It Affects The Ph of the Water

137A6264Properly maintaining water chemistry is a very important aspect of owning a swimming pool.  The water quality in your pool can not only affect your health but it can also affect the swimming pool itself and the equipment which circulates the water.  That being said you can begin to understand the importance of properly maintaining the water in your pool.

People often assume that by adding more chlorine to the pool they will effectively be keeping the pool water clean.  They also tend to think that with more people in the pool they will need to add more chlorine.  The thing about the water in a swimming pool is that you will never know what it needs without testing it.  This is why test kits were made.  Typically with a heavy bather load in the pool the water quality will decrease.  This is due to the fact that the oils in our skin as well as the sun screen that we use get into the pool and bond with the free chlorine preventing it from effectively killing the bacteria and viruses that may be there.

DSCN0637On the other hand if there is a fairly long period of time in which the pool is not used, will it affect the water quality?  In other words, does inactivity in a pool affect its water quality?

This depends on a couple of things.  Typically the water quality will not change much during time of inactivity.  However, one thing that can change is the volume of water in the pool.  If the volume changes, then the water quality can begin to change.  For instance, if the pool is left open and experiences heavy rainfall throughout the time of inactivity then the volume will increase.  It may not be much, but it may be enough to dilute the amount of chemicals in the pool.  In this case you would need to add more to stay within the appropriate range necessary to maintain a clean, healthy pool.  Conversely, if over the time of inactivity in the pool, the pool is left open and experiences several sunny, windy days then you may find that the water volume in the pool has decreased.  This is due to evaporation caused by the sun and wind.  In this case the amount of chemicals in the pool would seem to increase.  In both cases the amount of chemicals in the pool has remained constant, but because the volume of water changed it will either dilute or concentrate the chemicals in the pool.

The amount of activity your pool receives weather it is more or less will affect the water quality to some degree.  All in all it is really best to test the pool water at least once per week to get a good idea of what it needs in order to maintain a clean healthy pool.

Why does my Vinyl Liner In Ground Swimming Pool Need a Sump Pit

More-Plumbing-001There are many ways to build a vinyl liner in ground swimming pool.  There are many things that go into building a vinyl liner in ground swimming pool.  One thing that many builders do is install a sump pit just outside of the sidewalk that goes around the pool.  Why do they do this?

It actually makes perfect sense when you really think about it.  We all know that when it rains, the ground absorbs much of that water.  The water that gets absorbed by the ground is what is know as groundwater.  More often than not when a pool is dug the groundwater is visible in the deep end.  If the hole were to be left like that, you would likely see that ground water begin to rise a bit, especially when it rains.  Instead, pool builders finish building the pool and put a liner in.  In some cases this process is a race against time.  They have to get the liner in the pool and get water in before the groundwater rises enough to make the liner float.  You may be wondering why the liner doesn’t float anyway, even after the pool is full.  It rains all the time throughout the spring and summer right?  Well the reason the liner does not typically float after the pool is full is simply because the weight of the water in the pool pushing down on the liner is greater than the pressure from the groundwater pushing up on the liner from underneath it.

IMG_2683Keep in mind that I said that a liner will not “typically” float after the pool is full of water.  There are always some that don’t want to behave.  This is why many pool builders install a sump pit right outside of the sidewalk around the pools that they build.  It is more of a precaution.  If the amount of pressure from the ground water pushing up on the liner exceeds the amount of pressure pushing down from the weight of the water in the pool, then the liner will float.  Having a sump pit will allow you to remove some of the excess water from behind the liner to prevent the liner from having a chance to float.

If you have an in ground vinyl liner swimming pool that has a sump pit installed, then I would recommend using it, especially at times when there is a lot of rain.  This will help to ensure you don’t have a problem with the liner floating.