I have 2 female bettas in a 10 gallon aquarium. They used to be really good together, now they are very aggressive towards eachother..I have one in a homemade refugium, treating her fins. Well I let the one out of the refugium, and they both started to be aggressive. I dont know what to do, I don't want get rid of one. I have enough hiding spaces for one to hide in. Its not like one picks on the other and thats it, they both pick on eachother. Any suggestions?