HighFree Deep Water Culture Hydroponic System Growing Kit Large - Indoor Lettuce Growing System - Starter Hydro Kit with Air Pump for Greens/Lettuce/Herb/Mint/Parsley, Black (6 Plant Sites)

HighFree Deep Water Culture Hydroponic System Growing Kit Large - Indoor Lettuce Growing System - Starter Hydro Kit with Air Pump for Greens/Lettuce/Herb/Mint/Parsley, Black (6 Plant Sites)

General Hydroponics pH Control Kit For A Balanced Nutrient Solution

VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified