Well, Ricardo .... I buy 25-30 lbs of Frozen Blood Worm from DrFosterSmith every 6 months .. I am thinking to replace that with Mal's dry black worm .. I might just need that 1Kg every 6 months ?
I also has the problem of floating worms. I have quite a few tanks. Fishes in some tanks just go right at the top after a few try. Fishes from other tanks just are not top feeder .. Those tanks are taller tank and fishes like to eat at the bottom ... So I might not feed worm to those tanks. I also have other tanks that use central air pump to the sponge filter .. Water current in those tanks are very high at the top.. Floating worm is not a problem in those tank, as the current will constantly get the worm go up and down.