ONA Pro Active - Odour Neutralising Agent Block - 225mL fan-controllers Use PRE for 2 weeks

Use PRE for 2 weeks during the later vegetative growth stages

It’s designed for high-performance grow rooms with CO₂ supplementation or any environment requiring exceptionally high light intensity

Model SE-A200

Bring out the best in your crop

ONA Pro Active - Odour Neutralising Agent Block - 225mL fan-controllers Use PRE for 2 weeksIntroducing Ona Pro Active Odour Block 225mL Odour Neutralising Agent Solid Block is ideal for placing in internal ventilation systems to eliminate odours in office or household environments or used in small areas such as cupboards and closets or even cars and caravans (for larger space not in a ventilation system, we would recommend the gel). To use, you simply remove the lid or cover and place in the target area. The block works by surface area