We never have any GBRs in my area so I picked up a healthy looking pair today. I was just wondering if a 10 Gal would work for a pair. I know a 20 gal + is recommend, but I doubt I could do anything bigger at this. Also, what substrate is best? I have flat rocks for egg laying too. What is the best temp for them to breed (82-84* I heard, or is that just to spawn the eggs)? Thanks!