Hello, I have a 29 gallon with 3 dempseys 2 air paired and recently laid eggs. I had to divide the two males to themselves and let the female tend to the eggs. Yes I know a 29 is too small but I am getting a much larger tank very soon. Today the eggs hatched and there were some wigglers in the gravel. I left for 30 minutes and came back to no wigglers?!?! I have never read about the female eating them. What did I do wrong? Temp, PH, Nitrites/trates n ammonia are all good.