The pak choy plant (Brassica rapa L.) or commonly called spoon mustard greens is a type of leafy vegetable that is classified as mustard greens. Pakcoy is one of the favorite vegetables in Indonesia, besides mustard greens and lettuce. One agricultural system that can increase plant production is hydroponics, because it can be cultivated in various places, both in rural areas, urban areas, in open fields and in apartments. Hydroponic cultivation can be carried out throughout the year so that production remains stable and can meet crop production needs. In a hydroponic cultivation system, it is necessary to provide sufficient nutrient solution, air and oxygen to plant roots so that plant growth is good. AB Mix nutrient solution is one of the important ingredients in a hydroponic system, its distribution is also uneven in society, it is only easily available in urban areas, and the price is quite expensive for middle to lower class people. One solution is to reduce and look for nutritional alternatives that are easier to obtain, cheaper and whose quality is not inferior to AB Mix. Do you use liquid organic fertilizer (POC). The use of liquid organic fertilizer (POC) as a source of nutrition in hydroponic vegetable cultivation needs to be a big concern to reduce the use of inorganic fertilizers. This research aims to determine the effect of using NASA POC on the growth and yield of pakcoy plants and to obtain the best nutrition between NASA POC nutrition and AB MIX on the growth and yield of pakcoy plants in the wick hydroponic system. This research was carried out from March to June 2024, at the House Yard in Pagaruyung Village, Kusan Hilir District, Tanah Bumbu. This study used the RAL method with 4 treatments (1 control) repeated 4 times and 4 sub parameters. Data analysis used the Normality test, Homogeneity test and Annova test followed by DMRT 5%. The results showed that the NASA POC treatment had no real effect on plant height, stem circumference and number of plant leaves, but had a real effect or had the same effect on plant fresh weight, namely in the treatment (N1=AB MIX (control 5 ml 1^-1) with treatment (N3=POC NASA 10 ml 1^-1). optimal treatment