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.
Grouper Cultivation
Location: Gelang Patah, Johor
EM Application
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 â June 04 | May 04 â July 04 | June 04 â Aug 04 | July 04 â 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 â 4 inches | 3.5 â 4 inches | 3.5 â 4 inches | 3.5 â 4 inches |
| Death | 1,415 | 411 | 2,195 | 1,936 |
| Mortality | 14.15% | 5.87% | 18.29% | 19.36% |
