Question for Tradewind Spas

Hi Tradewind Spa
Jacuzzi for Carole Gildenhuys, 14 Hantam Avenue, Helderkruin, Roodepoort, constructed in 1982, Dudley, fibre glass 8 seater.

Can we reduce the water in our 8 seater jacuzzi during the winter months?
Is there a new thermal/solar blanket to reduce electrical costs? What are the options? What are the cost?

Thank You
Carole Gildenhuys (********)