Updated: Sep 28, 2021
These wafers made by a very trustworthy company. I have bought algae wafers in the past from other companies and have taken huge losses. One time, I had different brand algae wafers kill every fish in the tank. I contacted that company and they told me it was a known issue in their facility and it caused many people to lose fish. Obviously, I never bought anything from them ever again (even though they did give me my money back).
I started exclusively feeding these Hikari Wafers and can honestly say I've never had an issue with these. These algae wafers get "Boom's" stamp of approval. I feed these by breaking them into little pieces so that there are less fights at the bottom of the tank. Sometimes I can't break them my fingers so I use my teeth to break them apart a little - haha. I've never been sick from them, they have been in my mouth and I'm ok with it lol. Tastes just like nori for sushi. The fish really love them. From stingrays, goldfish, barbs, plecos, koi, cichlids, rainbows, cory and catfish...they all try to get a piece of them. I strongly recommend that you use these.