ISO MAX Acoustic Can Fan 10", 250mm 2310m3 hr High Power Extractor Fan WORK LIGHT or simply looking to add or simply looking to add some convenience to your everyday tasks BioBizz Grow is a liquid growth fertilizer which can be applied to most types of soil and substrate mixtures CAN FAN ISOMAX (aka Airforce 2 fan) Sound insulated fans are designed and constructed to minimalize sound output at range which makes them the ideal grow room inline fan for where noise sensitivity is a priority For example : A grow room measuring 2mtrs x 2mtrs x 2mtrs = 8mtrs cubed x30 air changes an hour = 240mtr cubed per hour will need to be ventilated