Below I have this marco the goes from row 2 to 2000(and that's okay), but I don't want to have to later in the year go and update this macor because it has exceed 2000 rows.
How can I put something like Range(Selection, Selection.End(xlDown)).Select, which goes to last record in place of 2 to 2000?

Sub col_n_check()

    Dim curr_Row As String
    For i = 2 To 2000
    If ActiveSheet.Range("BV" & i).Value < 0.3 Or ActiveSheet.Range("BW" & i).Value < 0.3 Or ActiveSheet.Range("BX" & i).Value < 0.6 Then
    curr_Row = i & ":" & i
    ActiveSheet.Range(curr_Row).Interior.ColorIndex = 24
    ActiveSheet.Range(curr_Row).Interior.Pattern = xlSolid
    End If
    Next i

End Sub