Breeding low-quality = Even lower quality. I mean, what are you going for? Are you just trying to mix random fish hoping for something good? Because thats not how breeding flowerhorns works.
If your breeding feeders, than breed whatever pairs. Otherwise do a bit more research on the varienty of flowerhorns before you have a mess on your hands because nobody wants low quality. There are enough poorly bred fish around.
I believe you have a Pearl flowerhorn. Thats a mix between a Carpintis and flowerhorn. Might not be fertile, but the best advise I can give is cross that (if its a male) with one of your parrots. The parrots look of half decent quality. Out of that cross you are going to get a 3-5 Red Tex that will fully fade.
If your breeding anything use the parrots. You will get much better looking fry than just random ZZ's. Either way your going to have to do a lot of culling.