I suspect you may be miss-using the term "equalizing". Your posts asks about normal charging
of the batteries by your solar panels
. Equalizing (conditioning) is something else entirely; generally done when the batteries are partially sulfated and have lost
some of their charge-holding capacity.
For normal charging
, your charge controller needs to be programmed to match the charging voltage profile specified by your batteries' manufacturer. Three stage "smart" charging is the best way to prolong battery
life. You can probably find the specs for the recommended Bulk, Absorption and Float voltage limits on the manufacturer's website. Lifeline, for example, has everything you need to know in their manual--LINK
BTW, Lifeline does recommend equalizing (they call it conditioning) for their AGMs: 15.5 volts for 8 hours, at 77* F.