i'm currently planning to breed my bettas as you all know and i have them in a 18 gallon tub with fake plants and about 5-5.5 inches deep of water. The female has been inside the tank inside of a glass... everytime the male makes some bubbles i let her go and they begin to get rough with eachother but eventually she becomes submissive and begins to run away and swim vertically to show that she is. But everytime he gets near she runs(swims) away and he cant get her... is it because there is too much water???/