Hydrofarm StackIt Stainless Steel Drying Rack Bubble Bags + Pollen Machines + Sifters A blue-enhanced silicon photodiode plus

A blue-enhanced silicon photodiode plus a custom optical filter holds calibration uncertainty within plus or minus 5% across the 400-700 nm PAR band

Made to keep you going for a long time

Between 77 and 50 degrees

Calibrate your pH meter before measuring for the best accuracy

12x 1Pot trays & lids

Hydrofarm StackIt Stainless Steel Drying Rack Bubble Bags + Pollen Machines + Sifters A blue-enhanced silicon photodiode plusHydrofarm StackIt Stainless Steel Drying Rack Professional horticulturists know the ideal position for drying their prized harvests: They hang them vertically! Flowers dried vertically will maintain their shape and aroma, which leads to a higher quality end product. This hanging rack features an all stainless steel construction, including 28 heavy duty clips, a strong frame, and a lockable hanging hook. About the StackIt: Hangs plants vertically for