We've looked and we can't find anything other than similar documents ewest provided above.
Milford percid gurus want to try it based on the problems that seem to be found common in the post hatch from ribbons on that combo.
There's something common to the fry dying off at 5-20 day post hatch.
The thought is having proper conditions to support the fry to get them to a larger size for study is target 1. and possibly allow continued growth.
It may be a short experiment Bill.
