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Dehumidifiers and moisture absorbers
Compare on capacity: litres a day for the powered units, millilitres held for the disposable ones.
Out of stock
RAM 12L Dehumidifier Grow Room Humidity Control
- Extraction Rate Up to 12 litres per day
- Target Humidity Range 30% to 80% RH
- Tank Capacity 2 litres
- Drainage Internal tank or optional continuous hose drainage
Ora 60L Grow Room Dehumidifier for Humidity Control
- Extraction Rate 60L / 127 US pints per 24 hours
- Power 650W
- Power Supply AC 230V ±10% / 50Hz / 1P
- Refrigerant R410A
Dry Bag Disposable Hanging Dehumidifier
- Type disposable hanging (passive) dehumidifier
- Moisture absorption capacity up to 500ml
- Recommended coverage up to 1m2 per bag
- Power none required (passive absorbing compound)
Dry Pot Disposable Room Dehumidifier
- Type disposable passive dehumidifier
- Moisture removal up to 800ml per pot
- Coverage recommended up to 1.2m2
- Active ingredient moisture-absorbing compound
Sulphur vaporisers and refills
Units that heat sulphur in a sealed room, plus the powdered sulphur they take.
Named mildew and botrytis products
Foliar products sold for one named disease rather than for plant health in general.
Foliar sprays and leaf washes
General-purpose sprays, washes and coatings that are not named for a single disease.
The full range
Mould prevention starts with humidity and airflow
Botrytis and powdery mildew both need still, damp air to establish — get humidity and air movement right in flower and most mould problems never start. Dry Bag (£6.50) and Dry Pot (£7.50) disposable dehumidifiers are a cheap first step for a small tent, pulling excess moisture out of the air passively without running powered kit. For anything larger, proper humidity control equipment holds RH in range rather than just nudging it down.
Alongside environmental control, Plant Vitality BPM (£18.95) targets botrytis and powdery mildew directly, Silver Bullet Mist (£12.95) is a preventative spray for regular use through flower, and Hot Box Sulfume Sulphur Vaporiser (from £24.95) treats a wider grow space against mildew spores rather than individual plants.
Buying advice
Tight, dense colas trap moisture at the centre where you can't see it — good airflow between and through plants matters as much as the humidity reading on your meter. Late flowering is the highest-risk stage, since RH targets drop to 35-45% precisely because dense buds are most vulnerable then. Free UK delivery over £60, or call 020 3488 0419 for advice on your specific setup.