You will have to consider them 50% hets, but it is possible that they still could be 66% hets, because you can have a pair of 100% hets produce eggs but still not get a visual from the clutch. In other words, if you don't get a visual morph their first clutch that doesn't mean that you won't get one their next clutch or some clutch after. You have to remember that the 25% chance of getting a visual morph from het to het breeding is only theoretical.
John
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