Discus won’t spawn

[siriusjamie]

I have a pair of Discus pH 7, water hardness is around 100 and zero ammonia the water temp is around 84. They constantly clean around the same spawning cone and def seem to be a pair, but they won’t actually spawn
I feed them brine shrimp, beef heart and blood worms and do 50 percent r/o water change every 3 rd day. Any suggestions?

[Second Hand Pat]

Maybe you have two males. Have you seen their breeding tubes?
Pat

[siriusjamie]

Yes, from what I can tell.

[Second Hand Pat]

So the female has a larger breeding tube then the male. It's larger with a squared off end. The males is smaller with a rounded end. Also do you have them in straight RO water?
Pat

[siriusjamie]

I’m 99 percent certain from their breeding tubes and the fullness in the female. I mix tap and r/o water.

[Second Hand Pat]

How old are they?
Pat

[siriusjamie]

I’ve had them about 6 months, I would guess 1.5 years. I have them in a tank with 2 more discus, if I take the other pair out they completely lose interest in each other.