Ok snapped some pics.
Went up to 5 fans now, that way i don't have to spin em so fast so they're quieter.
They're just standard PC fans, so cost only a few quid each.
Angled em so they're blowing out throw t'other side.
Tried various brackets and clamps, but most the metal ones i made were to heavy.
In the end tie wraps work great and i can remove em after summer in a couple of mins.
I just used a variable voltage transformer, that way i can adjust the speed.
As you can see i just have plugged into a timer.
If i leave the fans running constantly then i loose far too much water.
By far the best solution is to use a controller like the eliwell 915c, if i could find somewhere to order one on-line i'd buy 1 today.
As because it only powers the fan when it's needed it'd reduce evaporation to a minimum.
But the timer does the job.
All in all the whole lot came in under 20 quid.
SuperColey1,
Nope mines not a Fluval it's a cheap as chips supermarket special
I replaced the stock lights with a Hagen Glo 2 x 39w T5 ballast.
Worst thing i've done
Because i'm not injecting CO2 algae is now a constant companion
Cheers
Mark