This research aims to monitor the quality of water used for aquariums. The physical parameters used are water pH, water temperature, water turbidity, and water salinity. Using a pH sensor, temperature sensor, turbidity sensor, and salinity conductivity sensor with Arduino as the controller. The prototype method used in this research, starting from the formulation, research, building stages to testing and evaluating the results of the research. The working process of the system is when the system is activated, the sensors will detect and capture the amount of value contained in the water, then the data from the sensor is sent to a database in the cloud using an ethernet shield that is connected to the media router as a liaison for the internet network then displayed on the website dashboard in the form of graphs and monitoring record tables in real time. The sensors function to detect water quality, where quality standards have been set in this system, namely temperature standards of 27-30°C, pH standards of 7.0-8.0, turbidity standards of 2.5-5 ntu, and salinity of 20-28 ppt. If the sensor detects non-compliance with water quality standards, the buzzer in this system will sound. From the results of system testing, sensors can detect water quality in real time within 5-10 seconds. Based on the research results, this water quality monitoring system is effective to help ensure the quality of the water in the aquarium so that it always meets the standards.

The purpose of this study is to analyze the regulation of the authority of the central government and local governments within the Unitary State of the Republic of Indonesia and the harmonization of Central Government Regulation Number 21 of 2020 with the Regional Regulation of the City of Tegal Number 10 of 2020 in handling COVID-19. The approach used in this research is a statutory approach and a conceptual approach. This research data collection technique was carried out through conventional and online literature searches. The data analysis technique used in this research is qualitative because the data is presented in a descriptive-narrative way. The results show that the relationship between the central and local governments is complementary and interdependent. The central government cannot function without local government, and vice versa. The difference is only in the scope of power and authority of each. The division of authority in the relationship between the central government and regional governments is related to the division of household affairs or referred to as government affairs. Therefore, the legitimacy of the central government is determined by the existence and trust of local governments, on the other hand, local governments need central justification in administering government independently and autonomously.

State goals implemented in the regional scope are a form of embodiment in the welfare of the community whose implementation is based on regional autonomy. Cities and regencies are autonomous regions, where cities and regencies have full authority and freedom to develop and implement regional policies based on their regional potential and the aspirations of their own people, this is regulated in law number 23 of 2014 concerning regional government. The method used in this research is a philosophical approach method that reviews legal issues from the ideal value, with observation and interview data collection methods as well as literature review and data analysis methods, namely inductively carried out by translating various sources related to the research topic, so that conclusions are obtained in accordance with the research objectives formulated. The problem that will be discussed in this article is what is the legal basis for the Tegal City Government in determining the policy for the development of the Malioboro City Walk in Tegal City and how is the relevance of the development of the Malioboro city walk in Tegal City in relation to social justice for the community?

This research was conducted to examine the protection of neglected children with a focus: How is the legal protection for neglected children based on Law Number 35 of 2014 and What are the forms of legal protection provided by the P3AP2 and KB Offices of Tegal Regency in dealing with neglected children. Research on Legal Protection of Abandoned Children According to Law Number 35 of 2014 in Tegal Regency obtained the results: The P3AP2 and KB Offices are more understanding and aware of the rights of children and the protection of neglected children. Law Number 35 of 2014 is an amendment to Law Number 23 of 2002 concerning Child Protection which has explicitly regulated and even clarified criminal sanctions and fines for perpetrators of cruelty to children and legal protection is all efforts to guarantee and protect children and their rights. so that they can grow, live, develop and participate optimally with human dignity. DP3AP2 and KB Tegal Regency have carried out various efforts to protect abandoned children for the fulfillment of children's rights through freeing education fees for neglected children and poor families, increasing access to get assistance for neglected children, increasing community participation and the formation of the Tegal Regency Regional Regulation Number 5 2016 concerning the Implementation of Child Protection.

This is due to immoral acts in the form of adultery committed by Mr. The head of village (Head of Sumbarang Village) certainly cannot be justified and violates the norms that exist in the community, that there is no process in the criminal justice system that proves this, and there is also no proposal from the Village Consultative Body and no temporary suspension. for the Head of Sumabarang Village, it does not necessarily eliminate responsibility -and becomes a factor that can cancel the decision to dismiss. Harmonization of laws and regulations on legal products that regulate the dismissal of the Village Head as well as optimizing the role and function of the Functional Position of Invitation Designer in the Legal Division of Tegal Regency in the preparation of Regent Regulations and Tegal Regent Decrees, so that legal products are produced in accordance with the formulation and procedures as well as the basis for drafting laws and regulations.