so as i've had such a delay on my plans (i wont even get into it) i've designed a new vented lamp shade with built in scrubber. not in a position 2 post pics at the moment but i will soon:thumbsup:
the two ends will be flat sheet aluminium at 90 deg to the base shaped like topped triangle and the sides are just rectangles to fit the sloped sides of the ends (hope ur followin this:stoned
on one of the the ends cut a 4" diameter semi-circle from the center of the top. then on the other end fix a 4" circle of mfd/ply wood half on half off on the top

for the top take some 4" plastic pipe and sit it into the semi circle and over the piece of wood leaving a few inches over the end.
now attach some aluminium to fill in the sides.
on the piece of pipe exposed inside the lamp shade drill as many holes as possible. god i know there'll be questions lol. now take some 6" pipe the same length as the 4" and cut it in half along its length and aslo pepper this with as many holes as possible.
fix this length inside the shade over the 4" and fill the space between with carbon.

now simply fix a bulb holder inside and hey presto a vented lamp shade with carbon scrubber thingy......i hope:jointsmile:

know your gonna love this pro grow:bigsmoke: