Formulas

=TEXT(IF(J11="Unknown",C11,J11)+XLOOKUP(N11,Seeds!A:A,Seeds!H:H),"yyyy-MM-dd")
=TEXT(IF(J13="Unknown",C13,J13)+XLOOKUP(N13,Seeds!A:A,Seeds!F:F),"yyyy-MM-dd")&" - "&TEXT(IF(J13="Unknown",C13,J13)+XLOOKUP(N13,Seeds!A:A,Seeds!G:G),"yyyy-MM-dd")

Function Reference

&
Used to combine functions.
=VALUE
Get the value out of a cell ignoring any format specifiers.

'221 > 221

=TEXT(value, format_text)

=TEXT(value, "General")

=SWITCH(A2, "G", "Guard", "F", "Forward", "C", "Center", "None")
?

Range Reference

The $ symbol locks a cell reference so that it doesn’t change when copying a formula.

[]
Used to reference a table column by it's name.
  • Use @[] to reference the singular cell in the row.

Select only the column rows where the jar type matches.

=FILTER(VALUE([Water Added (mL)]), ([Jar Type]=[@[Jar Type]]