Well, thanks for that because my intention was to use it for levelling.
My sump is a concept aquariums sump with a piece of plywood glued to the bottom pane.
I slid the tank to where it will be situated and the concrete floor is raised right across the center width of the sump.
Should I just slide shims under?
Or is a self levelling skim coat of concrete really what's needed?
Thanks
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