im not really sure what you have going here, but heres my opinion, go buy a large clay pot, not reall big but, b4 you buy it flip it upside down and makesure you cons or at least 1 of them could enter the pot, b4 you put it in the tank, break off a peace off the pot of the lip big enough for your cons to enter, they will feel more comfortable here, and that means better chance for eggs
here are some new pots i got from joan fabrics for super cheap and tell me if they are good,also there is an week old pic here that shows one of my cons.leave me feedback if they look good.
one of my cons with an old fake house,that is now in storage
my favorite little one,i think it is a female cuz its belly is getting bigger in the last day or two
a pot that has a break that i copied from this forum
here is another of the same pot
i saw this on sale and thought it would work will it i think a couple has formed cuz of it
same pot just the back,does that look good for spawning
and another of the second photo but with a new fish