These are my Giant Flora exactly @ 8 weeks old sizes between 1.5"-2". Hatch date 8/27/2016...
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Those look great! Where does one measure, mouth to tail or just the body?
If were you, I would just cull all the stunted ones. There's no point of continuing because stunting are irreversible.They will stay small and will not reach its full potential.
I'd personally keep them all if you're going for a learning experience, since they tend to do better in higher numbers. There can be a learning curve when growing out tiny discus, and you can learn what works for you and what doesn't as far as diet, temp water changes, etc.... however, it is a lot of work for discus that likely won't have great shape and size as adults.
There is really no right or wrong answer here
Mr warblad breeds nice fish and is trying to give you the true breeder perspective.
However if you want to learn and are willing to invest your time in fish that you know will
Be sub par than that's totally your call
Thanks Pete! I've increased W/C to 60% daily. I'll take some more pics this weekend of everyone.