Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm Key additives: Chelated calcium (amino

Key additives: Chelated calcium (amino acid complex and nitrate forms)

Refillable: Yes — top up with ONA proprietary liquid

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

Does exactly what an extraction system should do — silent

while the elevated phosphorus and potassium boost natural essential oil and sugar production

Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm Key additives: Chelated calcium (aminoRhino 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.