to combine two tanks or not to this is my question

[fishoholic]

Triggers don't usually eat coral, the two you have will mostly likely never touch it. Some triggers eat shrimp though, can be hit or miss. The more aggressive types of triggers don't usually eat coral either, but if the coral is on a smallish rock or not glued down, they love to grab the coral and toss it around the tank like their own personal play toy.