unexplained death of two fish in a week, help all opinions appriciated

[audioslave]

sorry about your fish deaths but your pet store lead you down the wrong road, as for your clown fish, only the tank raised ones will live in a new tank very long, a true or false percula caught in the wild will not live through the tank cycle and if it does most of the time it will turn a darker color and one or both eyes will enlarge and get cloudy and some times the tang raised ones will not live, as for for the inverts, you need a ton of light before they will even think about surviving, you will need no less then 2 watts per gal so if you have a 40 gal tank you will need a min of 88 watts of lighting, very expensive and requires fans to remove the heat from the light fixtutes if you decide to purchase one, make sure you get one that is 50/50 not a full blue or 10,000k your fish will not like it. as for your tang, tangs require a large tank 100 gal or better, they require lots of vegetable matter in their diet also, but what probably got him was the oxygen level in your tank, or the lack of it should i say, you should only have 1 inch of fish per 10 gal for the first 6 months,then you can double it. you can use the 2 inch method like the guy at your fish store said but they have to be very hardy fish, and you will need major filtatrion (min of 10 times your tank size per hour filtration) and a must is a protein skimmer, if you dont already have one go buy one asap, i have found the "bak pak" is the best on the market for the money, it will save you lots of grief and money down the road. air stones are also a must, especially in a new aquarium, you need at least 2 in a 40 gal, one at each corner front or rear about 2 or 3 inches from the bottom, this will help break the surface of the water and let the built up c02 escape and help get fresh oxygen in the tank, if your fish have rapid gill movement or their mouth stays open all the time, that mean they are mot gettin enough fresh oxygen this will also make your ph/alkalinity and a host of other thnigs difficult to maintain..

 

[guineawhop]

ok i didn't read most of the replies because i didn't feel like reading them, but the reason why it died is because even though the tank is cycled for a month that's the minimum you are suppose to cycle the tank. there are a lot of delicate fish for saltwater and if your tank isn't cycled for at least 6 months to a year the delicate fish will surely die. fish like that tang. if you want a tang this early the only tang i'd recommend is a yellow tang.

 

[unleashed]

do you have any survivers left in your tank?if so your going to have to work a little harder at keeping there imune systems up to keep them healthy.purchse some melafix.its a natural based antibiotic liquid and stress formula.I use this with every new tank mate addition.remove any carbon packs you may have on your tank before adding melafix.just follow the directions.also extreme garlic with every feeding will help boost imune systems.both of these products will not harm inverts .I started mine the same way you did 2 yrs ago about 6 weeks of cycling.I still have 3 damsels left from cycle.( the other got eaten by other damsels).from what I have read or have been told by fish vets the melafix is almost the only product or others simular to it.safe for the main tank