I have a 20 long that has had a female bristlenose for some time now, I know she is ready to lay eggs. Never had any yet, but never tried to induce breeding with her. My buddy has a male bristlenose but its smaller. Pretty sure its at least 4-5 months old. The female is at least a year and a half. What I'm unsure of is the cave that I have created for them being sufficient enough. It opens in the front and the back. Should I have one with just one entrance? Also, does anyone know how to induce breeding with these. I only know my ph right now and thats at about 7.4. CO2 has been buffering the ph and lowering it. I use jsut straight tap water which comes out at 8.1. the tank is established, although did go thru major change of moving from a 20 tall to 20 long but kept most of the water and all the same filter media. Cycle is still very strong. I am very certian that all the other parameters are in order. I actually stopped testing them cause I was honestly wasting my tests. Every time they came out spot on, which I guess means my routine is good. Any help in making this breeding happen would be awesome.