General Hydroponics pH Down (acid) uses phosphoric acid, citric acid and mono-ammonium phosphate to lower pH. Keep out of reach of children.
Does not ship outside USA at this time.
| Size | 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38 |
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