Hydroponics is a method of cultivating plants using water as a growing medium. The main elements in growing hydroponic plants are water, light and nutrients. Apart from these elements, hydroponic plants also use media such as coconut fiber, bricks, charcoal husks, sand, rockwool, foam, etc. The use of a hydroponic system knows no seasons and does not require a large area of land compared to soil culture to produce the same productivity (Shobayar et al., 2018). One type of hydroponics is wick hydroponics. Wick hydroponics is a hydroponic system that uses wicks, which can be stove wicks, cotton, used cloth, or materials that can absorb water well (Puspasari et al., 2018). Hydroponics with sine wick is very suitable for beginners who want to grow crops using hydroponics, because it is an easy planting medium that only uses the capillarity of water. Hydroponic wicks do not require special maintenance, are easy to assemble, portable (can be moved), very suitable for limited land (Febriani et al., 2022). The kale plant (Ipomoea reptans Poir) is a plant that can grow quickly, within 25-30 days the kale plant can be harvested. Water spinach can grow all year round and can also be found in the highlands and lowlands. Water spinach plants can grow in areas with water at a temperature of 20-30°C (Abdi Syarifudin et Al., 2022). To grow water spinach hydroponically, there are important things that must be paid attention to, namely water nutrition so that the water spinach plant can grow well. Nutrients are a source of food for plants which will affect the quality and quantity of plant results. If nutritional needs are not met, there is a risk that plants will grow slowly, be stunted, or grow imperfectly. The nutritional requirements for kale plants are between 1050 and 1400 ppm (Rinaldo et al., 2022). Based on the background above, to produce good water spinach plants, a monitoring tool is needed that contains nutrient water in the planting media and also automatic watering of nutrient water in the planting media so that the plants can absorb nutrient water according to their needs. In this research the author will implement an automatic nutrient water irrigation system for Arduino-based wick hydroponic plants. The research was carried out at the Villa Mas Indah Housing Complex, Village, Central Kaliabang, District, North Bekasi in May – July 2023. The tools used were Arduino IDE, Fritzing, Eagle, Vissio, Notepad++, Microsoft Office 2019, Android cellphone. The research method that will be used is a technique using the Borg & Gall development model. In the research on the Implementation of an Automatic Nutrient Water Watering System on Arduino-based Hydroponic Plants, the research method that will be used is a technique using the Borg & Gall development model through 4 steps: 1. Needs analysis, 2. Planning and design, 3. Development, and 4. Testing and repairs. This research method can be described in a research flow diagram, by knowing the flow diagram it is hoped that you will get a more planned and structured process, data and final results so that the expected final results can be more precisely in line with the expected goals. This flow diagram will illustrate the steps that will be taken in this research. The results of the research are the implementation of an automatic nutrient water irrigation system for hydroponic plants. Where the concept produced in this implementation is measuring the accuracy of mixing the nutrient water and measuring the ppm available in the planting media which will be provided with nutrients automatically and monitored using a 16 x 2 LCD. In general, draining the planting media for hydroponic plants is still mostly done automatically. manually, so it takes a lot of time and energy to drain and replace the nutrient water in the planting medium. A new concept is needed to realize an automatic system for draining and replacing nutrient water to save time and energy in replacing nutrient water. The design in this implementation uses electronic components such as a stirrer motor, ultrasonic sensor, TDS sensor, solenoid valve, float sensor, relay, RTC, water pump and LCD. In this design, 2 water reservoirs containing nutrient water are created and connected to a TDS sensor to measure the ppm results from each reservoir. To drain the planting media, there is a TDS sensor, a floating sensor and also a solenoid valve. The floating sensor functions as a reference for the water level in the planting media, the solenoid functions as a water drain valve and the TDS functions as monitoring the nutrient water in the planting media. The measurement results from the TDS sensor will be displayed on a 16x2 LCD. In the final project research on implementing an automatic nutrient water irrigation system for wick hydroponic plants using