King size duvet over the lot and a small tube heater underneath seems to work.
Is it a 40" membrane like in your pic?
I have a spare propex heater if you or anyone else is interested post your email address, and il send you the details thanks!(its never been used still in box)simon
Quote from: Steve foster on February 05, 2014, 09:31:29 pmKing size duvet over the lot and a small tube heater underneath seems to work.^ this. I have two thick duvets that go right over the top and front of the water tank, filters, vessel, pump, ro the lot. If forecast says it's threatening to get down to even 3 degrees I get the duvets out. I have a thermometer that records max and min temps so I can keep an eye on temps under the duvet.If you don't have a small heater, hot water bottles with those fluffy covers on will do just fine, placed on the ro or tucked between ro and tank, something like that. If it's sustained freezing weather where you won't be working or using the ro to fill the tank, it'd be best to get the ro indoors.