Evenly spread and throughout the day is more efficient. You don't want big gaps between meals .
I always feed mine once before I go to work to avoid big time gap and 3 more times after work till bed time.
You can also easily synchronize your auto feeder with a timer that turns of your fx 6 for a 20 min. during feedings. You can set that a couple of times a day .
I use a dirt cheap auto shut off timer for this process and it have worked for me Just fine :IMG__201707189__082015.jpg