I came back to Sheffield last Sunday. Both my fishes and corals appeared to be very well looked after by my neighbour. God bless him. In fact, coral coloration has somewhat improved during my absence
.
I recorded the following water parameters on the day of my return:
KH = 6.55 dKH (down from 8 dKH on 16/6/2015) (Salifert)
Ca = 420 ppm (Salifert)
Mg = 1405 ppm (Salifert)
NO3 = 0.2 ppm (Salifert)
PO4 = 0.046 mg /l (PO43-) or 0.015 mg/l (P) (Elos)
K = 360 ppm (Salifert)
Salinity = 53.2 mS (PINPOINT Salinity Monitor)
My test kits have been calibrated using FM Multi-reference solution.
Here are the latest photos, which I have just taken. The sea star belongs to the Agean sea. I found it at about 15 meter depth. I put it back to the exact spot I found it shortly after taking its photo.