What i used:

• Arduino Nano ATmega168
• LCD 1602
• Tact button x 6
• Blue led x 2
• Green led x 1
• Potentiometer 10 kOm
• YL-69 Soil moisture sensor
• Water level float sensor
• Water pump
• Transistor 2N2222
• Resistor 10 kOm x3

Circuit

If someone read this, im not sure about my circuit (https://www.tinkercad.com/things/l3Y987Ci4E0-autowatering-system), because i have some issues with it (lcd becomes less bright and text is gibberish when pump is working). I will be glad to accept your advice.