Odour Neutraliser Bubblegum Boom 225ml (Block) mycorrhizae The PlantLiving line of grow Size:Garden HighPro OutdoorPro 100 The PlantLiving line of grow tent products use 600D Diamond Reflective Walls by omitting measured amounts of CO2 at set intervals the ambient CO2 levels in your grow space will be raised to an ideal 1200 ppm which is perfect for explosive plant growth Odour Neutraliser 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)