Things look positive. Thankfully, everything seems to have stood up to the challenge, with the thermostat reading the desired set temperature (7.5 C) late last night and again early this morning.
No change to speak of with the ranchu, although a couple do appear a little more active than i would expect. One female is very inactive, which i must get my head around as being normal given the conditions, but it is still a little unnerving. I'm sure when my ranchu numbers increase i will be less fearful of losses at this time if year.
When the bubble wrap arrives (tomorrow) they will be wrapped up and shaded, which should help reduce activity levels.