I'm seting up a 20 Long. I have been thinking about a pair of GBRs. I have a couple of questions.
Can I keep a pair in a 20L?
If I can keep a pair, can I have a schooling type fish in there with them? if so what would you recommend.
Yes, you could definitely do a pair in a 20G long. As for schooling fish, you could try a group of 8-10 Neons. Just make sure to use a lot of plants and break the line of sight up for the GBR's. Also, you could run into trouble if the Rams pair up and produce viable fry.