4 Inch Hydroponic Tube Fan (100mm) | Growmax HPS250WBOXGL The axle cores are made

The axle cores are made of top quality ceramics and are anti-corrosive and water proof

* Adjustable intake and exhaust vents

and that L-form amino acids help plants make larger

This all-natural energy booster contains concentrated seaweed

With the flip of a switch the ballast can be converted to run HPS or MH lamps

4 Inch Hydroponic Tube Fan (100mm) | Growmax HPS250WBOXGL The axle cores are made4 Inch 100mm Hydroponic Ventilation Tube Fan Perfect For Grow Tents Growmax tube fans, commonly found in computers offer unprecedented reliability over all other brands. The quality lies in the sealed, ABEC 7 rated bearings as opposed to the open bearing cases used by cheaper currently available versions. Expect higher pressure ratings, higher airflow volumes and a longer life from Growmax fans.