At approx thirty gal (gravel displacement), I would be looking for a 40 gal breeder tank or larger as opposed to more fish.
why would you say this?
i can't see why i couldn't add a few other fish
cheers
scott
Simply stating what I would be looking for were it me. 40 gal breeder offers much more room for present numbers of fish. Floor space is something else to consider with respect to dwarf cichlids who may become a bit more aggressive should they spawn. 40 gal breeder dimensions would in my view, possibly spare the cory's from possible damage by protective parents.
Cory's are quite persistent, and or dumb, with respect to invading the territory set up by cichlids once they get the scent of eggs.
Have seen cichlids attack the cory's mercilessly and yet the cory's return only to recieve more of the same. Other times adults(cichlids), who are perhaps more timid,, will simply abandon the nest or fry altogether. Is of little consequence if you do not plan to move one or the other ,or have no desire for fry.
Water changes are also something to consider. The more volume ,the more dilution capabilities between water changes irrespective of filtration.
And lastly, I tend to favor larger tanks with fewer fishes. Crowded tanks just look crowded to me . Opinions vary.