Instead of commercial fertilizer, chicken droppings fall through wire mesh strung across the pool’s deep end, nourishing the algae & duckweed in the pond below. The tilapia eat the pond plants, release their own nitrogen-rich excrement, & the fish water then gets funneled (using a solar-powered electric pump) into the hydroponics system that grows the family produce.
Pool Fountains - If you're putting in a pool, consider a saltwater chlorination system. It can be more expensive to install but cheaper to maintain. And the water feels great- no chemical smell, stinging eyes, or green hair.