This is a wonderful thread but I have a problem with all the bleach being used.

Chlorine bleach is toxic. You're feeding that to your birds. Their crop depends on a healthy bacterial and yeast balance to work properly. The bleach will kill both of those good guys. Yes, the bleach is in the water but it sticks to the seeds and it doesn't go away.
Instead of bleach, please try white vinegar or apple cider vinegar. H2O2 is also an excellent alternative and is non-toxic. We even used 35% food grade H2O2 to treat our well. Don't want bleach in my house or my water supply!!
I grow microgreens which are just what the fodder is but a few days younger. The white material on the surface is probably just the root hairs from the seeds. You're seeing these since the seeds aren't planted in soil. Microgreens, young fodder, will mold if they are too wet and there isn't enough air circulation. If your grow space doesn't have good circulation, try putting up a small fan on low to move the air some. You might get better results to water once, cover your bin until the seeds sprout, uncover and water once daily.
As a disclaimer, I haven't grown the fodder but I have grown a LOT of microgreens--I sell them to the local health food store. My girls aren't interested in the microgreens so I haven't pursued the fodder. Since it is now winter, I'll give it a try and see what they think.
Thanks for all the good info here.