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Biobizz Bio-Down 0,5 l
The 500 ml bottle is the standard size for lowering pH. Each 0.1 ml/L step drops the value by about 0.5 point, which covers 5000 litres of nutrient solution per step. Since one step usually suffices, that is also the number of litres you actually correct.
Biobizz Bio-Down 500 ml for lowering the pH
Bio Down lowers the pH by about 0.5 point per 0.1 ml/L step, in soil, coco and hydro. The 500 ml bottle covers 5000 litres per step, twice what the small size gives. Since one step usually suffices, that is also 5000 litres of corrected solution.
One step is usually enough
In soil and in coco, a 0.1 ml/L step brings the pH down by about 0.5 point. The alkaline regulator lifts only about 0.1 point with that same step. Coming down is therefore five times more efficient, which changes how long a bottle lasts.
Here, 5000 litres per step comes to roughly 5000 litres actually corrected, since one correction normally does it. If your water is hard, this is the bottle you will use, and slowly.
- Target: pH 6.2 to 6.5 in the solution
- Adjust after the feed goes in, not before
- One step down counts as five steps up
- About 5000 litres corrected with this bottle
For which volumes
This size is for growers who regularly mix large quantities of nutrient solution. In a home set-up the 250 ml bottle already lasts a very long time with this regulator. The dose does not change with the size of the bottle.
Specifications
| Property | Value |
|---|---|
| Contents | 500 ml |
| Type | organic pH regulator, liquid |
| Effect of one step | 0.1 ml/L moves the pH about 0.5 point downwards, whatever the substrate |
| Target value | pH 6.2 to 6.5 in the nutrient solution |
| Yield | 5000 litres per 0.1 ml/L step, in soil and in coco |
| Use | in soil, in coco and in hydro |
| Order | adjust pH after the feed has gone in |
Works with
The regulator in the other direction is Bio-Up 500 ml, and the same product also comes in Bio-Down 250 ml. Bio-Up 250 ml belongs to the same correction. The rest of the line is in the Biobizz range; pH control sits in pH and EC control.
FAQ - hard tap water
Why is this the regulator most growers reach for?
Because tap water in many areas is hard, which pushes the nutrient solution above the useful band of 6.2 to 6.5. Bringing it down takes about 0.5 point per 0.1 ml/L step, and one step is usually enough. The regulator that works the other way is needed less often and moves only about 0.1 point per step. Which of the two you need is decided by the meter, not by the plant.