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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Fortified with the highest quality ingredients
Equipped with 2 hose fittings
Transplant your Gro-Block plant onto a slab just like professional growers
This unit is a great match for the 12 in & 14 in Max-Fans™
EC and TDS meters (NaCl scale or the 442 scale)
GH pH 4.01 Calibration Solution Quart Gro Pro Fortified with the highest qualityGeneral Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used.
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