I've kept them before and mike beals has been a discus importer for years. What question do you have?
I would go with both cardinal and rummynoses. Teds fish room online has great deals on both. Great delivery too. I keep my 150 angel take with cardinals and rummy's. Columbus area here.
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Codiscus is in Ohio. He's the man
Mike is no longer importing discus. He was working with rays the last time I checked.