On Saturday I got 6 new fish(3 goldies, leopard wrasse, small clown tang and a midas blenny) in place of my 4 big fish(regal tang, tennenti tang and 2 huge orange line chromis).... So last night I went and checked on the tank before lights out and noticed my little clown tang had WS(he was eating nicely for the past 2 days) so told myself what the heck I still have some microblift herbtana and might as well use it as an immune booster. As per instructions I added the herbtana and my skimmer started to overflow right away, so switched it off(not a fan of leaving the skimmer off for long periods or any for that matter and planned to turn it back on this morning)... Well this morning came and my mom checked on my tank and asked me whats wrong with the 1 goldie, its just laying on the sand. So I jumped up from the couch to see whats wrong and the fish is dead, pretty bummed out about it and so was she. Upon further inspection I see that the little clown tang was also dead **** that was my moms fish because I made away with her dorry. Now to get them out asap but before I could do that I saw that another goldie was dead. Ok so now i'm pissed off and sad that 3 of the fish are dead and I cant find the other goldie, the midas blenny or the leopard wrasse(despite that he was harassed like hell by the 6 line and buried himself in the sand.) **** i dont want to see my moms face or hear what she has to say when she gets home. Is this a coincidence or what? Maybe I just got a bad batch of herbtana but it isn't working for me, the first time I used it it just made matters worse and now when I decide to give it a shot again I find my new fish dead. I dont know what my parameters are, the only test kits I have are ammonia, PH and KH. Checked those on Friday or Saturday last. Ammonia was undetectable. PH was 8.0 KH was 8 Dont have NO3, when I wanted to buy one the LFS didnt have.