Hello to all. I am located in Silay City, province of Negros Occidental in central Philippines. At present I have a working 4 sq.m. DWC and a 2 sq.m. GB, both supported by a 2 cu.m. filtered tilapia tank. I also operate a 6000 breeder tilapia hatchery that supplies fry to the local industry. My wish is to somehow utilize the soil pond water to support large scale aquaponics. How to filter the water to prevent root rot is a problem that has stumped me . Any ideas ? Thanks.