Southern California, SMALL yard. Is anyone familiar with Graphex in ground pool construction materials (with vinyl liner) vs. steel beam and concrete (as far as quality, longevity, and maintenance?). We are considering different options. Also, we are considering a whole house solar system within the next 3-5 years and would like the pool systems to run off that. Does anyone know of a filter and heating system (heat pump?) that will run off a home solar system (Not the water circulation solar system)? Thank you.