flexwatt under cages?

[ben6]

hi all,

i am new to flexwatt and was wondering if it will work if i were to put it under my tanks? the tanks are 16mm melamine (see pic), will i get about 32 defrees celsius in the tanks?. i have these cages stacked on top of each other and also want to know,will i need to leave a few mm gap so the flexwatt can breath? or is it ok to wedge between the top and bottom of the cages without a gap?



thanks in advance.


Ben