It would scratch the pool.
Will calcium hardness cause stains on vinyl pool.
A calcium scaling specific additive may remove the deposits but these products can take months to dissolve calcium silicate.
However the longer the stain sits untreated the more difficult it can be to remove.
An edited version of this article originally appeared in the summer 2007 issue of the edge a publication of the northeast spa pool association.
A higher ppm causes deposits on the surface and cloudy water.
If your pool has a vinyl or fiberglass liner the calcium hardness level should be between 175 parts per million ppm and 225 ppm.
Calcium hardness must be actively managed along with ph and total alkalinity to keep water in proper chemical balance.
Chemical experts say this isn t the case.
If you have a concrete or plaster pool keep the level between 200 ppm and 275 ppm.
If a vinyl liner s calcium level is too low this soft water situation could lead to foaming and other water problems and can harm the vinyl.
If you re dealing with too much calcium in a pool you can try adding a sequestering agent which is a chemical treatment that fights the effects of high metal and calcium content in swimming pool water as an added bonus it also fights stains.
Then refill the pool adjusting the alkalinity.
Although calcium carbonate is always white in this case it presents as brown or grey because the dirt discolours the calcium carbonate making it appear brown.
These stains are notoriously difficult to scrub free.
If you have a vinyl or fiberglass pool you won t be able to use a pumice stone.
The optimal calcium level is 200 400 ppm.
Some pros fear that purple stains are permanent on a more porous surface.
Low calcium as is often the case will cause long term serious damage especially to plaster vinyl liners grout in between tiles metal rails and even concrete decking around the.
When you retest the pool water the alkalinity should be lower.
The first thing you ll want to do is remove calcium from pool water.
The stains should dissipate over time even in a plaster pool.
Calcium can appear in the form of a thin calcium film that covers dirt or metal stains on the pool interior.
Calcium on the low and high end of the scales will eventually cause problems and when they do be ready for some serious problems.
For this you ll need to partially drain your pool.
Calcium hardness is also very important to the chemical balancing of your vinyl liner swimming pool.
Calcium for a liner pool can be a bit lower than a plaster pool in the range of 150 250 ppm.
