I bought these for filtration in my HOB cause I got sick of buying the filter. They said NOWHERE on the package that there was any chemicals in it and these were the closest thing my Dollar General had to the plastic scrubbers. There Dawn mesh scrubbers with a sponge in the center. Has anyone used these? Will they harm my fish because either im paranoid or its messing with my tank. Water perams are good and all just my fish are all grouping together sense I put these in and just being kinda wierd... Should I take them out and BOIL them for a while to be safe? Any one with experiences with these please let me know. Again nothing on the package stated anything about soap in them or anything.







