Was going to switch to night lighting but forgot trying to get ready for vacation

Came home after 4 days near Nelson with 40c temp.
both tanks had lost over 20% water volume and temp in the high 80's
My 10G nano lost primary cerculation but did have a small pump moving some water and my bigger 33 had lots of water movment, was the water cascaded down several inchs to the new water level!!!

To my surprise everybody was well and waiting for a nice drink of water.
