help, fish dying

your Ph is a little low imo.. i think the desirable ph is 8.4 ( although i doubt that would be the cause of your fish illness since is not way off)
and yes, if you didnt wash your power heads that might be the cause, i mean fish dont just die unless there is something terribly wrong with the water quality they are on. ( or a parasite, fugus, or infection).

 

yeah im trying to get my PH up. i feel stupid, i didnt even think of the power heads. too late now.

I dont think the 2 damsels are going to make it. there sitting at the bottom just laying there....

do you think this is going to harm all the corals i have in the tank?

 

do you see any stress? i still would do a mayor water change.. maybe 50%.
take your fish to the bawl with completely new water.. maybe that can help.. but do water changes very often since that tank wont be cycled.

 

How old is the tank, why isn't this in ASAP, please fill out the entire form for ASAP. Rather than speculating on why this tank is failing, take a sample of water to the LFS and have a full battery of tests run. While you're doing that mix fresh water in a trash can, put a ph and a couple bubble stones in it, as well as a heater and prepare to move your fish and corals to that until you can resolve what's wrong with your DT. Most likely you'll have to nix the contents, bleach wash, rinse and dry several times (tank, rock, and sand) then start over, but I can't tell you anything for sure until we confirm your tests independently and get a lot more info.

 

there is no need for all of that. the only signs of stress is the 2 fish. there is not much in the tank. i dont see how putting in a power head would kill every thing. if it does that blows. i don't have any salt to even start mixing water. it would have to wait untill tomorrow. i dont even know how much is in my bank at the moment lol so im screwd.

 

so all 3 of my damsels died, but every thing else in my tank is doing fine. i noticed that after each one died, there color around there mouth and face started getting darker... almost brownish. has any one seen anything like this? im wondering if i stressed them out by putting to much flow in all at once. because i only had 1 K2 and then added a second K2 with a K1... im having trouble with the flow in the tank, because its an odd 55 its skinny and really tall. i pointed the two k2's at each other from the sides of the tank, and it just seemed to blow every thing so hard they all closed up. as of now i have the k1 pointed at the k2, and everything in the tank seem's to like at, as there not closing.