I hope this pic of the cooltube system is clear enough..
britewire Reviewed by britewire on . How I grow hydro.. I got a KETER cabinete for growing in, these things are perfect if you ask me. Getting the equipment is pretty easy for me cause I live in the Netherlands where every town got it´s own grow shop. For lighting i use 2 600W HPS lights with a cooltube armature. The cooltube armature is a glass pipe you place over the light witch creates a tube to suck your filtered air thru. For a filter I use a light low torque ventilator connected to a active coal filter. The ventilator sucks the air Rating: 5