Just a few things I noticed and would suggest to have changed... Not sure if they're the exact reason for the lack of appetite, but they are potential concerns:
- Compact bulbs are typically not suggested, as they tend to cause some issues with the eyes. There may be other complications, but I think that's dependent of the brand as well, though compact bulbs are generally not recommended. If you could change to a good MVB or a Reptisun 10.0 tube bulb, that may improve not only their appetite, but may also prevent potential long-term health problems.
- I know you're trying to give them as many opportunities as possible to eat by leaving the crickets within their terrarium throughout the day, but please note that crickets
can bite your bearded dragons if left unattended for an extended period of time. If you notice that your bearded dragons will not eat the crickets, they may not even fight back if they are "nibbled" on by the crickets. And trust me, they do bite, and can cause some infectious wounds. If you're looking for some food to provide them throughout the day, I would suggest some kind of worm (black soldier fly larvae, under the brand names Reptiworms and Phoenix Worms; silkworms; etc.) placed in a dish that they cannot crawl out of.
- You mentioned they "eat basically only crickets"; have you tried any other live feeders such as the worms mentioned above, or certain roach species? I know there are some bearded dragons that are relatively picky with what they eat, and when some refuse to eat a certain type, a taste of another may spark an interest.
- As for the housing them together and dominance issues... Please note that bearded dragons are solitary animals in the wild, and do not need the company of another, other than to mate. When you house them together, you put both of them at risk of harming or stressing out one another. You've noted that you've seen a "little bit" of dominance going on, when in actuality, it seems like more is going on than you know of. The idea that they "really enjoy each other and love to lay on each other" is your own human personification, when in reality, laying on each other indicates a form of dominance where one is asserting that they get most of the heat and light than the one below it. Even though you think they are "enjoying" on another's company, there have been a number of incidents where bearded dragons housed together have gone from completely "getting along" to suddenly injuring or killing the other. Even if you could watch and observe them every hour of the day, by the time one of them strikes out, you may be too late. Of course, there are incidents where these interactions never occur between two housed bearded dragons, but there are also many cases of sudden dominance issues and attacking of one another. I suppose the real question is if you really want to put them at that kind of risk. Someone once put it quite nicely: "Housing bearded dragons together is like choosing not to wear a seatbelt: some get away with it and never get hurt, others get injured or even killed because of it. In the end, there's always the risk." Here's a link to a few threads made about housing bearded dragons together, as well as incidents of attacks:
Relatively recent incident; lived in "harmony" for four months, before suddenly attacking the other: http://www.beardeddragon.org/forums/viewtopic.php?f=5&t=141112&p=1135021&hilit=attack#p1135021.
Other links including suggestions NOT to house bearded dragons together: http://www.beardeddragon.org/forums/viewtopic.php?f=5&t=138718&p=1115932&hilit=housing+two#p1115932,
http://www.beardeddragon.org/forums/viewtopic.php?f=6&t=139888&p=1125956&hilit=housing+two#p1125956,
http://www.beardeddragon.org/forums/viewtopic.php?f=34&t=138154&p=1110674&hilit=housing+two#p1110674,
http://www.beardeddragon.org/forums/viewtopic.php?f=6&t=137298&p=1101539&hilit=housing+two#p1101539. You can also do a search on the forums concerning housing two bearded dragons together in one enclosure, and you'll find more information about it.
I don't mean to scare you, and I really don't like to rain on your parade, but it's honestly a risk that people need to know of.
Other than that, I would suggest trying a new
UVB light and/or a variety of different feeders. Best wishes!