I would change the brand that you are using. I use HIKARI BLOODWORMS and I never see any thing in them. they cost more but who needs to seng their kids to collage?Stella said:I rinse mine under running water in a net and then feed. There are all kinds of binders and things in those cubes (you can see the gunk when it defrosts in the tank) that just pollute your tank.
Laura