I think that I saw an equation by chem geek, or someone else maybe, when I was looking at old posts. Now, I cannot find. I am looking for the equation for figuring out the concentration of a pool chemical, CYA in my case, as a function of the volume of pure water added to a pool. This might be called something like continuous dilution. I am assuming that the pool is always full and perfectly mixed. A rule of thumb I learned years ago was that for every 2.3 volumes of fluid added to a fixed volume of solution, the solute concentration would go down 90%. This helps some, but it not really what I need now. Of course, I can check the equation against that rule of thumb. In this scenario, a garden hose fills the pool, somehow the new water is 100% mixed instantly and perfectly with the pool water, and the excess just drains out at an equal that of the incoming garden hose water. The excess overflows and goes to drain. The level of the pool never changes. I know that there are some differential equations to figure this out, but there must be a simper equation that is derived from the differential equation. If someone even knows that name of the equation, that would be helpful, as I am sure that I can do a web search to find it. Myi old chemical engineering text books provide the information to set up the differential equation, but are useless from a practical perspective.
As a side note, I am not really going to spill out a lot of expensive water, but the equation will help me calculate a few things with respect to alternate means to reduce CYA in a pool. Thanks.
del
As a side note, I am not really going to spill out a lot of expensive water, but the equation will help me calculate a few things with respect to alternate means to reduce CYA in a pool. Thanks.
del