You can not sell antibiotics without a prescription in any country in the EU I believe. Atleast you can not where I am from (Sweden) and you can buy this there. Also, and I know this is not exactly scientific...lol.... I have yet to put my nose near any antibiotic and not have to control my gag reflexes. This stuff is virtually odorless.
I just used it and it does something to surface tension as it causes skimmers to go nuts instantly when added....and I mean NUTS!!!!! I started dropping it in and got to 40 drops out of 85 (mayby20 sec) required before mine turned into a fountain. It also killed a tiny patch of Caluerpa (within 24 hours) I had growing and this would not be affected by antibiotics. All fish and corals are totally unaffected...unfortunately so is the reason I was using it, Calothrix I thought, a type of Cyano. Maybe I have to rethink my diagnosis.
My guess would be a powerful oxidizer combined with something else that makes the skimmer react so violently.
I just used it and it does something to surface tension as it causes skimmers to go nuts instantly when added....and I mean NUTS!!!!! I started dropping it in and got to 40 drops out of 85 (mayby20 sec) required before mine turned into a fountain. It also killed a tiny patch of Caluerpa (within 24 hours) I had growing and this would not be affected by antibiotics. All fish and corals are totally unaffected...unfortunately so is the reason I was using it, Calothrix I thought, a type of Cyano. Maybe I have to rethink my diagnosis.
My guess would be a powerful oxidizer combined with something else that makes the skimmer react so violently.