Loving all the pics. .
Just a question, have you considered the heating/cooling issues surrounding the tank being outside?
Thanks for asking . Yes that's why we are running two chillers to bring the temperature down to 26 C . If that 's not enough we can then add more as we still have three more pumps available. But IMHO there is a gentle breeze around all the time and the tank is surrounded by water evaporating from the pool so the temperature should be quite cool all year round.