Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm Does exactly what an extraction

Does exactly what an extraction system should do — silent

Measurement range: 5% to 40% moisture

a standard time-switch will arc out and fail within months — sometimes leaving your light stuck in the on position

This is a properly formulated two-part hydroponic feed that doesn't ask you to choose between quality and price

Best for: Quality-focused growers running hydroponic systems who want to maximise essential oil production and crop finish without guessing what works

Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm Does exactly what an extractionRhino Hobby Carbon Filter Rhino are the worlds leading hydroponics air filter manufacturer. Rhino Hobby carbon filters are made with the same virgin Australian carbon as the premium Rhino Pro range: RC412, but they have a shorter lifespan. Rhino Hobby carbon filters feature a swappable bottom and duct coupler and they should be turned around every 8 12 weeks to even out the wear ensuring the filters last for their full 9 12 months expected lifespan.