Applications of solar power that are very suitable to be developed in Islamic boarding schools are lighting and activities that have recently been made extra-curricular activities and economic recovery by farming using hydroponic technology. The results of the research on solar street lighting on each component function properly according to their respective specifications and the proximity sensor detects the presence of objects within 0.5 meters, 1 meter and 1.5 meters from the sensor until the buzzer sounds for a few seconds. Furthermore, research on solar hydroponic plants using ac motors in testing ac motors using inverters has a weakness if the inverter is used for 24 hours it will reduce the life of the inverter or the inverter will be damaged faster, In addition, choosing an inverter that does not match the specifications of the motor will also have an impact on the motor itself, in this case it is necessary to pay attention to the selection of the inverter to be used. However, if you use two motors at the same time, it will reduce the impact of damage more quickly on components because the motors work alternately by setting the programmble DC timer. In both solar power applications, Based on the results of the investment analysis, the costs are quite cheap because they reduce the bill for payment each month and can return the capital for making the application. if you use two motors at the same time it will reduce the impact of damage more quickly on the components because the motors work alternately by setting the programmble DC timer. In both solar power applications, based on the results of the investment analysis, the costs are quite cheap because they reduce the bill for payment each month and can return the capital for making the application. if you use two motors at the same time it will reduce the impact of damage more quickly on the components because the motors work alternately by setting the programmble DC timer. In both solar power applications, based on the results of the investment analysis, the costs are quite cheap because they reduce the bill for payment each month and can return the capital for making the application.

This study aims to determine the effectiveness and differences in the results of different types of Mesh sizes using Basic Gill Net Fishing Equipment (Bottom Gill Net) on fish catches, and to determine the composition of the types of fish caught. The method used in this study was an experimental method with a completely randomized design (CRD). The research was carried out in the waters of Puyahan Hamlet, Lembar Selatan Village, Lembar District, West Lombok Regency. The results of the study based on Sidik Diversity Analysis (ANASRA) showed that there was a "very significant" different effect on the different Mesh size type treatments in units of weight (kg) where (F count 10.43 > F table 1% 5.95). The results also showed that the types of fish caught during the study used 4 types of mesh sizes on basic gill nets, with the most in treatment 1st repetition 3 as much as 4.9 kg and the least in treatment 4th repetition 2 as much as 1 kg. overall the highest catch was obtained in treatment 1 (mesh size 1.5 inches) as much as 16.9 kg (36.03%) and the least was obtained in treatment 4 (mesh size 2.5 inches) as much as 7.4 kg ( 15.80%). The types of fish caught are: Lemuru, Rajungan, Grouper, Tembang, Beronang, Layur), white pomfret, seed jackfruit/kuniran, Tiga waja.