In an attempt to keep the thread on-track....
Sorry if I wasn't clear in my initial post, but I am talking about an SBIG which already has peltier cooling and water cooling capability but for which I need pump, radiator, etc. I'm not interested in attaching additional peltiers to the SBIG or such.
In summer my current SBIG gets down to -5 or zero at best. I'm looking to extend that.
Thanks,
Roger.
PS. Malcolm, you always have too many projects on the go it seems... don't know what you're complaining about