General 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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Commercial Pricing Available
We have been the supplier of choice for numerous commercial hydroponic and agricultural operations for decades. For more info call 404-367-0052
Discreet Delivery Available to all 50 states
All packages are always discreet packaged. Learn more about our shipping policies here
We pride ourselves on our excellent customer service and wealth of knowledge on hydroponics and indoor agricultural best practices
We do not store customer credit card information and do not sell your personal information to third parties. Click here for more information