Reptile cooling systems?

[inkyjoe]

Hi, Im planning on breeding diamond pythons in a few years, and they need to be kept pretty cold in order to attain fertility (50-60 degrees F), and what makes this tricky, is that it needs to be done during our summer.
Ive seen a couple of models of reptile cooling fans, but they look a bit feeble to do the trick. I was wondering if people have used them, and what temps they can get down to, if not, what other methods have people used to keep temps down during the summer?

[BecciBoo]

Portable air conditioning unit. You can pick them up second hand on ebay for about £50

[inkyjoe]

good idea! do they have a thermostat on them, or can u use a reptile stat(not sure if that would work), and could they be channeled to multiple vivs?

[cordylidae]

do you want to keep the viv at that temp?
theres a couple of things you could do either way keeping the viv that temp would be hard or if you have an of fridge use that but with a fan blowing a bit warmer air in connected to a stat or a herp nursery 2 would be better but them optoins are out the viv