My firemouths are building a nest and I have no idea what to do or not to do. Its a very small track with too many fish but they seem to do well. Its a 29 gallon with two firemouths and two other american cichlids and some glass catfish and tetras. They have dug it out and look like they are starting to lay eggs... Can I still do water changes? what should I do to try to save the babies? Any info would be great.