I have a mated pair of Red Severums by themselves in a 90 gallon tank.Male is about 7 inches,female about 5 inches.They just laid eggs a couple of days ago for the third time.Other two times they ate the eggs.This time they didn't eat the eggs but all the eggs turned to fungus.Its almost as if they ate all the good eggs and left the ones with fungus on them.Just the opposite of what they should be doing.Did they turn to fungus because of hard water?Or is it because the male didn't fertilize them good enough?I have read it takes a lot of tries before they get it right.Should I get something to soften the water?Or could it be the male is infertile.Or should I just be patient,they'll get it right eventually?