It depends on how many fish you have and what kind. If you have a whole tank of carnivores (a large sized tank) who feed at the top then I have heard that you can just press one cube of them to the glass at the top edge of the water, but if the number of fish you have eating them is smaller, you don't want to give them more than they will eat in one meal. It will foul your water.
You have to be careful with live or frozen foods as sometimes the freezing process does not kill all the bacteria in the food and can cause you problems down the line. That is why some of the aquarium keepers recommend the freeze-dried bloodworms as the only form to use. There are however some who say they have used the frozen type with no problem. The choice is yours. Just be careful not to overfeed. If you see that they are not eating anymore after a couple of minutes, remove the rest as they will leave them to make your water dirty and smelly as well as unsafe eventually.
Welcome to Fishlore. This a great site with a lot of people and they are very willing to help. It has been a great help to me to be here and I have met some of the finest people I have ever met online and off. It is my hope you will have as pleasant an experience as mine. If you haven't yet, I invite you to browse the many topics and posts. There is a real wealth of experience and knowledge from a lot of people in there as well as a lot of really beautiful pictures.
I cut however as many cubes of bloodworms as I'm going to feed and drop the whole wrapped cube in a small bowl of water. when its thawed open the cube into a net then rinse the BW with dechlorinated water, blot with a towel and feed a few at a time to my fish. I like hand feeding them so I can make sure they are eating all of them. Some say dropping in the frozen cube can hurt the fishes mouth, I really don't know since I haven't tried it. I agree there should be instructions on the package. Hope that helps
Thanks so much for your help. This site is the greatest. I will try the thaw, rinse and hand feel method. By the way, I got my wisdom teeth out today. I did a water change before I left (just in case). Maybe the fishies will have solid food before I do!
Thanks again for the welcome. This forum has been so helpful. I am sure that my tank, fishies and I are all the better for it!
My teeth are feeling better. Thanks for asking. I got the stitches out today.
The fish LOVED the bloodworms...BUT, I do have a question. The day after I fed the bloodworms, I lost my first fish (a Von Rio Flame Tetra). He had always been the lightest color of the three tetras, but seemed healthy. The day before the bloodworms, I did a water change and (unfortunately) changed the filter for the first time. All the other fish seem fine. Upon further reading, here, I will not be changing the filter again anytime soon. Do you think either the bloodworms or the filter change could have been responsible?
One thing I was wondering was whether feeding the bloodworms could make the other fish more aggressive. I do have two golden longfin danios who like to chase the other fish. I noticed one of them being aggressive toward the poor little fish who died, but it was after the little guy was clearly fading. Any thoughts?
The fading color was a definite sign something was wrong. When you changed teh filter it may have caused a mini-cycle and just finished your little fishie off. when you change your filter if you will save a piece of the old filter and leave it in with the new it will prevent this happening.
The Bloodworms will make them more aggressive, just that each and every fish wants ALL the BW for himself :0 The Danios were probably picking on the one that died because it was sick. Hope that Helps