Took the last shadecloth off the roof. Recharged and pressurized the solar collector loop. The wee digital thermometer for the heatsink (400 gal. stocktank under the floor) has a dead battery, so 'll pick one up in town tomorrow.
The combination temperature and pressure gauge (old photo) on the collector loop is running at 25 psi and about 130°F midmorning.
A soil thermometer shows 60°F for the thermal mass of the floor.
