I have put optimal through one of these smaller three blade Ninja bullet blenders. I'm tell you, you need to have ear protection on when that thing is grinding the noise is so tremendous. The work load on the little motor is a lot and it heats up to the point that it shuts itself off due to thermal overload.
I think Bill is correct that a 2 hour soak to soften, and then maybe a partial dry and grind might work better. If I had to do that every day I would definitely see the advantage of buying a 50 pound bag of the correct sized feed.
To answer the question about the goldfish, fortunately we have had no turbidity issues, either from having a few goldfish or from having a pair of pekin ducks. Water has been clear until our first bloom starts. I think mostly we justdon't have enough properly fertilized eggs and then we have large SFS and a few large GSH left plus the goldfish that are eating the little ones due to lack of cover.
Working on those priorities as well as would love to create a SFS brooding pond even if I have to repurpose a small stock tank or swimming pool to do it.
