Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm using pure mineral salts and

using pure mineral salts and chelated micronutrients so the feed stays stable and usable across a full watering cycle

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

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

Running a heater and a fan or cooler off separate manual switches means you're constantly babysitting the room temperature yourself

straightforward to use

Rhino Hobby Carbon Filter Size:4" (100mm) / 300mm using pure mineral salts 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.