Natural (This product is a candidate for organic certification. To ensure the lowest price, Kelp4Less has chosen not to register this product.)
Other product highlights:
A natural pH adjuster down.
Control pH levels.
Well suited for:
Hydroponics, soil and soil-less.
When and where to use:
Use before watering or feeding.
Ensure bag is properly sealed and stored in cool, dry, dark place.
How to mix:
1/4 tsp. into reservoir and then test. Repeat until desired pH is achieved.