Hesi pH Range.
Hesi pH Minus (Down) - Grow
38% Nitric acid solution. To avoid adding more phosphorus during the grow phase, HESI provide a pH Down just for the grow phase with only nitric acid, so only adding nitrogen.
Hesi pH Minus (Down) - Bloom
59% Phosphoric acid solution.
Hesi pH Plus (Up)
50% Potassium hydroxide solution.
Available in 1L
pH Minus Grow - £12.75
pH Minus Bloom - £12.75
pH Plus - £12.75
This product should be handled with extreme care.
NEVER mix pH UP and DOWN together.
ALWAYS store separately.