Glitch(s) with turtles.

So, I looked into it, and I couldn't find anything on my issue. So, basically, I cant breed my turtles besides one of them. I placed the eggs on the same surface(and my eggs glitched to, luckily I got 5 turtles, and I had 12 eggs) Now they cant breed and I would like some help.

 

I believe that everything was fine for the living habitat of the turtles. Aka, it was a good size. And I can't exactly send a screenshot, sorry. Any help would be appreciated!