I don't have experience with clay pots. The shells work great. When my fish are not spawning they stay out and are active. They do dissappear for long stretches when spawning. I got six of them so there is always some that are out to enjoy. Again, not sure about the clay pots (that's more of a frontosa thing maybe???), but the shells do work. You may need to decide what is important to you: breeding or viewing.woogie0004 said:i picked up a breeding pair of black calvus the other day and put them in there 70 gallon tank where they will have the whole tank to themselves. the next morning i couldnt find the female i thought for sure she had jumped out but i couldnt find a body but i couldnt see or feel her in the shells well 3 days later after i thought for sure she was a goner i seen the pair together. so i am not likeing the shell idea to much. my question is will i be able to have just as much breeding sucess useing clay pots with holes cut out in them or should i give the shells another chance?
You could get another trio and that would help.