Thanks everyone!
Mine were not babies that I had to rear to breeding age, all of them I aquired at sub adult stage so the wait was definately long knowing that it wasn't just because I was waiting for them to mature.
This spawn actually happened in the tank with 6 new zebras I just bought about 6-7 months ago and 3 adults although one of the adults got killed about 3 months ago through fighting

Maybe this is why that happened.
I've had adults for the past 3 years or so and had one spawn early on but then the breeding male got killed after it's first spawn

That was a real bumber which put me off for a while and I wasn't actively trying to spawn them after that.
I think what finally got it to work was me getting back into it and actively trying to breed them. I pulled out all the tricks this time. Over the years I would try one new thing and then another and another but this time I went all out and threw everything at them. I transfered 9 zebras (now 8 ) into a 60 gallon tank, filled it with slate for lots of hiding spots, did cold water rainy seasons, built up to the rainy seasons by adding RO right to increase the TDS, measured the TDS and brought it up to about 600 in the dry season and knocked it down to about 100 in the rainy season, I used Almond leaves in the water I mixed to do the rainy season and left the water at about 77 degrees in the rainy season and 85 in the dry season, adjusted the power head to have more flow in rainy season and less in the dry season....
I've also tried an assortment of breeding caves, I made some from broken slate, I've bout some different ones from a couple of members on this forum that were also made of slate. I've bought these other clay ones from I dont know where BUT the ones that they did their business in and the ones they tend to like the most are the rounded clay tubes that I think a lot of people use in Germany. Thats where this happend. the dimensions of the clay tube is 2.5 inches x 4 inches and its not completely round, one side it is flattened to make a somewhat triangle body.
I might have missed some stuff but basically that's what I did and it seems like it's worked so far. Feel free to ask anymore specific questions...Now to try it on a second tank
