thanks for all the interest and comments
newbudda -
wassabi - yer plan sounds sound, and if i had a dark place or a brain dysfunction id do the same thing

sorry if my drobe expands yer plans, but not
that sorry
DougalTheDingo - thanks mate, the lights do go on at night and for the past week the (canopy level) temp has touched 30 briefly but average 28 with lights on, which is all right. thanks for the baffle suggestion, but im pretty happy with it right now.
THC4METOO -

cheers bud, im sure glad to leave my tenting days behind and get a solid gaff for me concubines. funny, we had people staying for the weekend and they came into the room and were more impressed by my tool wall than any noise from my drobe. then the lass seen the big book called "HASHISH" on my table, and clocked me a look - "Are you growing weed" and i smiled
turns out her mum got busted with five outdoor plants last year

didnt get sent down but lost "5 enormous plants, like trees..." all the more reason for staying indoors...
withnail - thanks mate, i was sadly
under qualified for the blue peter presenter job, as my illegal drug diet consists solely of cannabis...
Jim_jim - thank you sir, the cotton wool may have been slowing down extraction, but its mostly gone now. i tore out the pipe and put most of the cotton behind the drobe. not silent, but temps have been reasonable (though so has the weather)
scoobs - cheers m'lady, if my closet hacking can provide but a glimmer of inspiration, then that aint 'alf bad in my books. if i ever get the build-a-grow-show syndicated, ill let you know
DarkAngel3030 - thank you very much indeed.

CLAR1TY -

@ your "kullen" experience. 10 oz from that space? alright! thanks for your concerns, but humidity aint much of a worry for me, my rooms not dissimilar to a nuns beaver, if you follow me

the clear plastic thing to join them i never considered using, and all the edges were sealed with gaffa tape inside and out where applicable. i already got a plastic bottom under them, even gave it velcro fastenings not unlike the homebox. appreciate the consideration though bro. now go get an avvie and remeber to notify people if you intend changing it...

the drobes been running, as mentioned above, at around 28. the difficulty was getting the temp in the veg cab up whilst keeping the flower drobe down. i replaced the fly screen intake filter with some of that hoover dust filter material, the almost spongy stuff and this slowed the air flow down a little, enough to raise the temps by about 2 degrees, so average temp in there is 22.C during the day and the bloom drobe is 24 in the dark.
the veg cab lights switch off as the flower room lights up at 9pm. this keeps the drobe cooler during the busy part of the evening when im active in the room. once i leave and the night wares on the ambient temp drops, the veg room hovering around 19.C-ish until 3am when it pops back on and warms the plants through the coldest part of the evening. the bloom room usually sits at its highest temps round these times, but aslong as the ambient temp is bellow 25 theres no problems. the rooms just starting to heat up at 9am when the flower room goes to bed and decent temps are maintained.
the current occupants dont seem to mind the stay, shall post a pic or two in the diary soon. need batterys or a lense or some film or something. need to find a pen, write a list...