ONA Linen Fresh - Odour Neutralising Agent Block - 225mL varo__300mm Precision CO2 Control: Easily adjust

Precision CO2 Control: Easily adjust and maintain accurate CO2 levels for ideal plant growth conditions

Tough and completely light proof PVC coated memory duct has the smallest corrugation profile and largest true inner diameter for maximum air flow and quiet air passage

Another benefit is the addition of soluble calcium

Quality and economical heaters

ONA Linen Fresh - Odour Neutralising Agent Block - 225mL varo__300mm Precision CO2 Control: Easily adjustIntroducing 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