Cleared Cells Not Detected As Empty Cells

I've run into a problem detecting empty cells. I'd like to search down a column of numbers and count the cells that contain numbers and ignore the cells that are empty. If the cells were made empty of their data by manually using the delete key before hand then my macro works fine. The problem is if the cells were manually made empty using the space bar to clear their contents.. then the macro seems unable to detect them as empty.

I have tried "", IsEmpty, and a few other things and nothing detects the cell as empty unless the delete key is used rather than the space bar. For this macro I really need the user to be able to clear values beforehand using the space bar, and to have those cleared cells be detected as empty cells.