Flowerhorn breeding problem

[bandaiban]

Hi, i was wondering if any of you guys can help me out. I have this pair for almost 2 years and i tried breeding them a few times now. But the eggs always go bad, i tried leaving the eggs with the parents and taken them out. Nothing seems to work. I think they are good size to be breeding, the male is about 12 inches. Heres the pictures, i hope you guys can help me out. Thanks in advance.

http://http://i40.photobucket.com/albums/e225/heftykicks/image_zpseb60d1e4.jpg

http://http://i40.photobucket.com/albums/e225/heftykicks/image_zpsb0991e3e.jpg

http://http://i40.photobucket.com/albums/e225/heftykicks/image_zps7d38c696.jpg

http://http://i40.photobucket.com/albums/e225/heftykicks/image_zps212b5342.jpg