Just wondering on thoughts regarding caves. Looking around it seems there are many different styles, all with different strengths and weaknesses. I'm looking to make/buy a cave but want it to blend in with my tank decor. Ie look natural. I have looked at the terra-cotta pots and can either cover it in gravel or plants, but I'm not sure about the hole in the back. I might be over thinking it but is there a chance the male can inadvertently fan eggs out the back. Or is it beneficial as it would allow greater water flow over the eggs?