Sorry mods, I just didn't know any way in which I could show people what I meant....

hxxp://cgi.ebay.co.uk/REPTILE-HEAT-MAT-130-x-274mm-7-Watts-WITH-FITTED-PLUG_W0QQitemZ260491640383QQcmdZViewItemQQptZUK_Pet_Supplies_Reptiles_Spiders_Insects?hash=item3ca682fe3f

Will this do the job if I sit it beneath my tray with my pots/rockwool cubes on, I'm just trying to up root temps a bit on the cheap.

Not the first time i've heard of doing that and it still sound like a good idea. I'm sure someone with experience in this field'll be along shortly.

mate i bought a 3ft heating mat from my local hydro shop last year.It didnt have a thermostat I had to put it on a timer 1hr on 1hr off or else it would have cooked my plants.If you buy it give it a test run for 24hrs just to make sure it dosnt overheat or dry your pots out

Hi mate, I'm only going to use a 7w'er and run it half an hour on half an hour off.

I nearly sure that mat i have is a 30w and it was drying out 6.5L pots .I think a timer is a good idea untill you check it out

ok m8

]i think there is a reptile thermostat you can use with that heat mat

http://www.google.co.uk/products?q=habista...ved=0CCUQrQQwAw