Sorry for the late reply!
I just uploaded a new version (1.1.0) with a better icon.
Thanks for bringing up that issue, you are right that mod really had very similar icons to mine, it seems we both had the same idea to edit the vanilla storage tank icon and ended up with something almost identical.
If you look them side by side the colors are a bit different, and the added pipes shifted by 2 pixels, but besides that they look the same.