I have had one experience with the Rams. I had 2 pair in a 20 gallon tank on the bottom of a three tier tank. One pair had a 'house' in the back of the tank and the other (the one that spawned) had a 'house' at the front of the tank. They also had no light to speak of except for what came in the window. One day when I was checking tanks to do water changes (which hadn't been done for 2 weeks) I noticed the pair had free swimming fry with them. Once I saw them thought I left a light on over their tank and the next day all the fry were gone. My pH was 7.2 and hardness was 5. Once I moved the pair to their own tank and kept an eye on the tank for future spawnings, I had none. I just lucked out that one time. Kaycy