Filter
Quick View

Hydro Systems

GroStar pH calibration kit (pH 4/7/10, 8 oz. each)

$28.99
In stock
Quick View

Hydro Systems

GroStar pH calibration kit (pH 4/7, 8 oz. each)

$18.99
In stock
Quick View

Hydro Systems

GroStar GS4-E replacement pH/EC combo electrode

$79.99
In stock
Quick View

Hydro Systems

GroStar GS3-E replacement EC electrode

$53.99
In stock
Quick View

Hydro Systems

GroStar GS2-E replacement Soil Spear pH electrode

$181.99
In stock
Quick View

Hydro Systems

GroStar GS1-E replacement pH electrode

$50.99
In stock
Quick View

Hydro Systems

GroStar GS2 Soil PH/Temp (2-IN-1) Pen

$256.99
In stock
Quick View

Hydro Systems

GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen

$178.99
In stock
Quick View

Hydro Systems

GroStar GS3 EC/500ppm/700ppm/Temp (4-IN-1) Pen

$113.99
In stock
Quick View

Hydro Systems

GroStar GS1 PH/Temp (2-IN-1) Pen

$115.99
In stock