I am planning to construct a small plunging pool at my beachfront home in Baja, Mexico. The Sea of Cortez is beautiful but stingrays and jellyfish abound, hence the pool. I'm new to this so I would appreciate thoughts and comments on my approach. I am right on the dune approx. 70' from the water. This area of Baja has very little in the way of pool supplies so I am planning to drill a well and use seawater for the pool. My thought is that by adding seawater as needed I can keep the pool clean and cool without the use of chemicals or a filter. Water would overflow the lip of the pool and return to the beach. The plan is to have a capacity of about 1200 gallons, 4' at it's deepest with a small area at about 16" of depth for kids and lounge chairs. Construction is to be poured concrete & block, plastered for waterproofing. I am planning to introduce water to the pool by means of inlets at the lowest levels of the pool thinking that the warmest water will rise to the top and overflow leaving the coolest water behind. I have located a pump that will stand up to seawater and should deliver around 10 gpm. Not sure what the wellwater temp will be but by having a shallow area and a deep color finish I anticipate it will heat up fast enough in the Baja sun.
On-line searches have not resulted in locating anyone who has tried a vertical beach well for the purpose of a pool. I would be pleased to speak with anyone who has experience with a similar approach.
Thanks in advance for your input.