Description
The everyday strength pH adjuster, not the professional concentrate
Growth Technology pH Down 30% is a phosphoric acid pH adjuster at the strength most home growers actually want. The 81% professional concentrate is efficient but unforgiving in a small reservoir, where a few drops can overshoot by a full point.
Key Benefits
- Controllable in a small tank - 30% strength means you can actually hit a target rather than bracket it
- Phosphoric acid - contributes phosphorus rather than an ion the plant has no use for
- Stable once mixed - holds a set pH better than citric acid, which biology breaks down
- Works with any feed - mineral or organic
- Safer to handle - far less aggressive than the 81% professional grade
Overshooting pH in a small reservoir
A strong concentrate in a domestic-sized tank is almost impossible to dose accurately - a squeeze too much and the pH crashes, then it gets corrected back with pH Up and the reservoir ends up loaded with salts that were never meant to be there. A weaker acid removes the problem.
How to Use
- Adjusting: add in small amounts, stir thoroughly, then wait a minute before reading again
- Order: always adjust pH after the nutrients are in, never before
- Hydroponics: target 5.5 to 6.2
- Soil and coco: target 6.0 to 6.5
- Handling: wear eye protection and add acid to water, never water to acid
Technical Specifications
- Active: Phosphoric acid, 30%
- Role: pH adjustment downwards
- Best for: Home and small commercial reservoirs
- Alternative: 81% professional grade for large tanks
- Handling: Eye protection; add acid to water
