GH pH 4.01 Calibration Solution Quart Gro Pro highly efficient Philips electronic ballast

highly efficient Philips electronic ballast rated for 50

Transplant your Gro-Block plant onto a slab just like professional growers

4" x 4" x 3"

This revolutionary reflector can increase lumen availability by as much as 300% and is now included

Sturdy Growth From 3-Part Base Nutrients Designed Specifically For Your Plants Using a high-quality micronutrient formula is your ticket to a rewarding garden

GH pH 4.01 Calibration Solution Quart Gro Pro highly efficient Philips electronic ballastGeneral 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.