pH Probe for 850048 Water Quality Meter Tents / Indoor Greenhouses Active Aqua Air Stones: These

Active Aqua Air Stones: These are an optimal choice for introducing oxygen into your hydroponic growing system

requires minimal maintenance

provides uniform lighting for a bloom coverage area of 2' x 4' and a vegetative coverage area of 3' x 5'

Forged from high-quality sheet steel and fitted with a PEFC-certified ash wood handle

pH Probe for 850048 Water Quality Meter Tents / Indoor Greenhouses Active Aqua Air Stones: ThesepH Probe for use only with Sper Scientific 850048 Combination Water Quality Meter. Redesigned Gen 2 probe for improved accuracy Capable of measuring low ionic strengths for stable pH readings in clear water bodies. Includes 3 foot cable and probe guard