It is unfortunate that I have to de-commission this aquaponics setup after almost a year. My client has sold his condominium apartment and asked me to de-commission for storage. Nevertheless, it's a wonderful experience setting up this flood and drain system. The bell siphon works effectively and water change is kept to every fortnightly. This is in contrast to the weekly 50% water change for my monster fish tank at home (no plants in this system).