Reef aquarium dying

[leightond]

i have owned my reef aquarium now for about 6 months. since christmas i have lost about 8 fish (tangs) (clownfiish) (humbugs) (damsels) i only have 1 more fish alive. i dont no why they are dying. i also had 2 corals, 1 dead so i threw it out and the other wont open manymore.

all my water testing is fine altho my nitrate is 20ppm

temp - 25c

in my tank There is white cystals things on the plastic and some black/grey stuff on the sand. but not sure what it is.

i think i had whitespot/ich b4 christmas but i treated it.

i will try and upload photos.

ANY HELP I WILL REALLY APPRECIATE.

 

[leightond]

My pictures

02/02/2012

 

[Hinds04]

pics look like common tank things. Nitrate are borderline to high. How did you treat the ich? Where did you get your live rock? What size is the tank? What lighting?

 

[leightond]

i treated the ich with esha oodinex. my live rock came from maidenhead aquatics. i have 4 T5 or T8 fluorescent lighting tubes my tank size is 323 litres.

 

[leightond]

my skimmer was off 1week when treating the ich

 

[leightond]

t5 lighting

 

[melosu58]

I would doublecheck your water test by getting your LFS to do it. It has to be water quality or ich. Read these for better understanding of parasite. Also moving to sick fish forum.

An Ounce of Prevention is Worth a Pound of Cure: A Quarantine Tank for Everything by Steven Pro - Reefkeeping.com

Marine Ich/Cryptocaryon irritans - A Discussion of this Parasite and the Treatment Options Available, Part I by Steven Pro - Reefkeeping.com

Marine Ich/Cryptocaryon irritans - A Discussion of this Parasite and the Treatment Options Available, Part II by Steven Pro - Reefkeeping.com