EcoPlus Hydrovescent Air Disc 4 in EcoPlus® Hydrovescent Air Disc® air diffusers are great for aerating or circulating nutrients in your tanks or reservoirs. These air diffusers incorporate suction cup feet to keep your Hydrovescent Air Disc® secured

EcoPlus Medium Round Air Stone These great quality Air Stones aerate and add oxygen to the water in your reservoir or grow system. Circulates nutrients into the water and helps to maintain an even water temperature. Use with 3/16 in ID air line produc

GH pH Test Indicator 8 oz General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers pre