The ornamental design for a poly ibctank, as shown and described.
FIG. 1 is an upper front perspective of a poly IBC tank embodying my design, with a pallet being shown in broken lines for illustrative purposes only and forming no part of the claimed design;
FIG. 2 is a lower perspective of the poly IBC tank shown in FIG. 1;
FIG. 3 is a front elevation of the poly IBC tank shown in FIGS. 1 and 2;
FIG. 4 is a right side elevation of the poly IBC tank shown in FIGS. 1-3, with the opposite side elevation being a mirror image thereof;
FIG. 5 is a rear elevation of the poly IBC tank shown in FIGS. 1-4;
FIG. 6 is a top view of the poly IBC tank shown in FIGS. 1-5; and,
FIG. 7 is a bottom view of the poly IBC tank shown in FIGS. 1-6.