**7. Conclusion**

*Emerging Technologies, Environment and Research for Sustainable Aquaculture*

cultivation locations in Southeast Sulawesi, Indonesia. The results of our interviews are formulated in order of priority of the benefits obtained by the community in

*Longline cultivation using used plastic bottles (A) and clean and beautiful floating cage arrangement (B).*

• *Easy to assemble*. This tool is made of a PVC pipe with a size of 3 mm which can be designed rectangular with an appropriate connection. PVC pipes are cut according to the desired size and connected with the appropriate connections

• *Durable*. This tool is proven to be resistant at sea and will never rust. The durability of the tool with good care can reach 20–25 years of use.

• *Easy to maintain*. This tool has a very simple form and will be easily cleaned and maintained to extend its durability. Optimal results can be provided, it takes one reserve outer net as a replacement net each time the cultivation.

• *Float and balanced*. The shape of this tool is simple and floats on the surface of

• *Full protection*. This tool is effective in protecting seaweed. The outer net as a protective device is very effective in avoiding herbivorous attacks that often

• *Clean seaweed*. Seaweed will be cleaned from various dirt that are attached to the sea, including epiphyte, with a note that farmers must also often do the

• *Volume of large seaweed*. The number of cultivated seaweed seeds is large with an initial weight capacity of 40–80 kg wet. After 30 days, it can reach

• The location of cultivation is narrow and orderly. The design of this tool does not require a large cultivation location. With just a small and regular area, the

The many advantages of using floating cage tools illustrated very clearly that the future use of floating cage methods will be very good. Although currently the use of floating cage is still limited to certain locations, however, this development

the water. This tool can be placed in all marine topography.

using floating cage tools. These advantages include:

cleaning on the outer wall and in the net.

farmer can arrange the floating cage placement.

160–320 kg of wet confinement.

(**Figure 1**).

**Figure 14.**

graze seaweed.

**114**

Innovation of cultivation methods using floating cage gives good results to support the growth of *Kappaphycus alvarezii* and *Eucheuma denticulatum*. The growth of *K. alvarezii* looks quite good with a specific growth rate up to 6.4%/day using floating cage method. However, *K. alvarezii* only has 4.2% growth/day using the longline method. The floating cage method can truly protect seaweed from herbivorous fish. Thus, the growth of seaweeds *K. alvarezii* and *E. denticulatum* is better because they are not attacked by fish.
