While it’s true that it does depend on a few factors, the overall value and success of your project will be increased by asking yourself a slightly different question.
How much should I spend on my Plunge Pool project?
Problem #1 – Too much Water in the Pool
Lower the water level in your pool to keep proper skimming action, and to avoid contamination from planters and deck area flooding.
For most pools with a sand/glass media or DE filter, the simplest way to lower the water level is to place the multiport valve onto the waste position and roll out the backwash hose. If you have a slide (push-pull) valve, backwash the filter to lower the water level.