FIG. 1 is a front view of the tank element showing the new design;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
FIG. 5 is a left side view of FIG. 1;
FIG. 6 is a perspective view of the tank element of FIG. 1 disposed on the lower center of the front surface of a tank;
FIG. 7 is a front view of FIG. 6;
FIG. 8 is a top view of FIG. 6;
FIG. 9 is a bottom view of FIG. 6;
FIG. 10 is a back view of FIG. 6;
FIG. 11 is a right side view of FIG. 6;
FIG. 12 is a left side view of FIG. 6;
FIG. 13 is a perspective view of the tank element of FIG. 1 disposed on the lower left of the front surface of a tank;
FIG. 14 is a front view of FIG. 13;
FIG. 15 is a top view of FIG. 13;
FIG. 16 is a bottom view of FIG. 13;
FIG. 17 is a back view of FIG. 13;
FIG. 18 is a right side view of FIG. 13;
FIG. 19 is a left side view of FIG. 13;
FIG. 20 is a perspective view of the tank element of FIG. 1 disposed on the center of the bottom surface of a tank;
FIG. 21 is a front view of FIG. 20;
FIG. 22 is a top view of FIG. 20;
FIG. 23 is a bottom view of FIG. 20;
FIG. 24 is a back view of FIG. 20;
FIG. 25 is a right side view of FIG. 20;
FIG. 26 is a left side view of FIG. 20;
FIG. 27 is a perspective bottom view of the tank element of FIG. 1 disposed on the upper right portion of the bottom surface of a tank;
FIG. 28 is a front view of FIG. 27;
FIG. 29 is a top view of FIG. 27;
FIG. 30 is a bottom view of FIG. 27;
FIG. 31 is a back view of FIG. 27;
FIG. 32 is a right side view of FIG. 27;
FIG. 33 is a left side view of FIG. 27;
FIG. 34 is a perspective view of the tank element of FIG. 1 disposed on center of the front surface of a tank;
FIG. 35 is a front view of FIG. 34;
FIG. 36 is a top view of FIG. 34;
FIG. 37 is a bottom view of FIG. 34;
FIG. 38 is a back view of FIG. 34;
FIG. 39 is a right side view of FIG. 34; and,
FIG. 40 is a left side view of FIG. 34.
The broken lines in FIGS. 1-40 represent environment and are for illustrative purposes only and do not constitute part of the claimed design.