In April to September 2004 we were engaged with Grouper cultivation together with PPKJBS (South Johor Farmers Organization) at their facility at Gelang Patah, Johor.
Location: Gelang Patah, Johor
They imported some 10,000 fry of Grouper with the size of 0.5 inch from Bali and grow them up to 3.5~4 inches in raceway, thereafter transfer them to cages to grow them further.
Effects & Results
At sometime early 2004 they started this business with 10,000 fry but unfortunately 90 %of them died within 1 month from the commencement of their venture. We offered our help and established a system to treat the water with EM for 4 rounds of cultivation. The results are illustrated below.
|Round 1||Round 2||Round 3||Round 4|
|Period||April 04 – June 04||May 04 – July 04||June 04 – Aug 04||July 04 – Sep 04|
|Number of fry||10,000||7,000||12,000||10,000|
|Size of fry||0.5 inch||0.5 inch||0.5 inch||0.5 inch|
|Harvest||3.5 – 4 inches||3.5 – 4 inches||3.5 – 4 inches||3.5 – 4 inches|