Biobizz PH- Minus - Organic pH Down Made from Citric Acid
Best for: Growers who need to lower nutrient solution pH without resorting to harsh mineral acids.
Our thoughts
Citric acid from citrus fruit is about as gentle a way to bring pH down as you'll find, and it fits neatly alongside an organic feeding routine. If tap water in your area runs on the alkaline side, this is worth keeping on the shelf as standard.
Biobizz PH- is an aqueous pH-down solution made from citric acid, the same naturally occurring acid found in lemons and other citrus fruits. It's designed to work alongside BioBizz's other organic products and can be used in every watering, correcting pH downward without the harsh mineral acids found in many conventional pH-down products.
Like its pH+ counterpart, it's suitable for use during both the growing and flowering periods and works across soil, coco and hydro setups, giving predictable, gradual pH correction rather than sudden swings.
How it compares
It's the organic alternative in a category dominated by mineral acids.
- Vs Canna pH- - Canna's version uses conventional mineral acid; BioBizz's citric acid base is gentler and suits an organic feeding programme
- Vs GHE pH Down - similar general comparison; the citric acid formulation is BioBizz's key point of difference for organic growers
- Vs household vinegar or lemon juice - while both contain acids that can lower pH, PH- is formulated and concentrated for consistent, measurable dosing, which DIY alternatives can't reliably match
A gentler option than mineral acid pH-down, aimed squarely at growers keeping the rest of their feed organic.
Usage guidance
Dosage
Mix your nutrients first, measure the pH, then add PH- gradually, stirring and re-measuring until you reach your target range - typically 6.2-6.5 for most substrates.
Water source
If your tap water tends to run alkaline, expect to use this more often than pH+ to keep your feed in range.
Timing
Suitable for use in every watering, throughout both the vegetative and flowering stages.
Technical specifications
- Type: organic pH-down (pH lowering) solution
- Active ingredient: citric acid
- Formulation: aqueous solution
- Compatible media: soil, coco and hydro
- Compatibility: works alongside all BioBizz substrates and liquid products
- Sizes available: 250ml, 500ml and 1L
Who this is for
- Growers on alkaline tap water who regularly need to lower pH
- Organic growers avoiding harsh mineral acids in their feed
- BioBizz users wanting a pH-down that matches the rest of their routine
Our take
It's a simple, gentle solution to a problem every grower runs into eventually - keeping feed pH in the range your plants can actually use.
Does exactly what it should, day in, day out, and it's worth keeping on hand even if you don't need it every watering.
