I've read some posts and literature on the sensitivity of GBRs and the requirement for an absolutely clear tank with low nitrates. Is this an exaggeration? I mean, they're cichlids, maybe they're just sensitive compared to other cichlids (granted, discus are cichlids too). I have a tank with lots of plants (but wouldn't call it a planted tank) with a reasonably small amount of fish and do regular water changes every week or two. Maybe bolivian rams are a more robust a sensible choice? How much color do you sacrifice by going with the bolivians?