Any tips or tricks on how to get them NOT to lay eggs on the glass? They keep spawning and eating their eggs in a few hours. There are plenty of caves and rocks, plants and their only tank mates are a small group of Julidochromis. There is no aggression in the tank and they all have their own favorite spot. I even tried scraping the eggs off the glass and putting them in a low-flow tumbler but that didn't work either.