Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm while the elevated phosphorus and

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

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

straightforward to use

you may need to add calcium supplementation — growers report occasional issues here

Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm while the elevated phosphorus andRhino 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.