[Koha] Zebra rebuild frequency

Hi everyone, I know the topic of Zebra index rebuilding comes up periodically and I've tried to find an answer to this but can't seem to locate one. I have the package version of 3.16.02 installed on Debian and have the following "default" cron entry in /etc/cron.d/koha-common: */5 * * * * root test -x /usr/sbin/koha-rebuild-zebra && koha-rebuild-zebra -q $(koha-list --enabled) Aside from this rebuild, is there some other "complete" Zebra rebuild recommended, and if so on what frequency? Thanks! Steve