Here is a room that features equipment photographs @87system'19.

I love marine aquariums.
I like the various fish and corals, of course, but more than that, I have been fascinated by the sophisticated and beautiful equipments for many years.
I do not know myself whether the purpose of the fish or the equipment is the goal any longer..
Therefore, it was made independent as a room only for the equipments.
For the 87system'19 mineral measurements, I will record in this room.

What I want to do now is not a mechanism to hide, but a mechanism to show and fascinate.
Seawater change 0 is the final goal, but it is far away.

Thank you for always following and commenting.
I would like to provide photos that can not be seen elsewhere.
For the measurement log, which is the main function of this application, is also plotted finely even when the result is bad, please refer.