After Installing PoolRx I See Purple Dust on Swimming Pool Surfaces
After Installing PoolRx I See Purple Dust on Swimming Pool Surfaces
Why is There Purple Dust on Swimming Pool Surfaces After Using PoolRX Unit?
If used properly, PoolRx will not cause any purple dust in the pool. If you see purple dust on surfaces that can be brushed but keeps coming back it’s most likely due to very high CYA(cyanuric acid) aka pool stabilizer, conditioner levels.
High levels of CYA is NOT a problem when using PoolRx, but you need to be sure to keep your water in balance, especially when it comes to your Alkalinity.
In fact, PoolRx help a lot hight CYA pools, because when CYA goes above 50ppm it slows the chlorine. So, your chlorine may last longer with high CYA, but it kills slower. So, algae and bacteria are growing faster than the chlorine can kill them.
PoolRx we take Algae out the equation, so the slow acting chlorine is more available to eliminate the easier to kill bacteria and other contaminants.
As a general rule, when your CYA is at 100ppm or above, consider your Total Alkalinity 1/3 lower than what the test reads. This means you will need to adjust Alkalinity up using Sodium Bicarbonate based on these numbers to keep water in balance. If you don’t, your water is out of balance.
Water will naturally attempt to balance itself and drop out of solution whatever is in excess in the water. And when cyanuric precipitates out, it can combine with the copper minerals, forming copper cyanurate (purpule staining). This comes in the form of a purple dust and can be brushed up, but will not leave the pool until CYA is reduced and water is back in balance. If this happens, we recommend draining or partially draining the pool or using CYA Reducers. Once the cyanuric levels are within normal ranges, and the water is in balance, the purple dust will dissolve back into the water.
