What test kits are you using? Honestly 0.5 ammonia might not seem like much but you really shouldnt have any detectable ammonia at any time. That's not likely to be what killed the fish though but possibly the starfish.
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Any particular reason they die (the ones you mentioned).
The salinity is too low for linkia as should be a minimum of 1.023-1.024 and temperature somewhat important. This is not a star for a beginner or in a tank that's not stable and should not be in a tank that contains snails, or certain hermit crabs. Changes alone in oh, and salinity will take them down.I am new to Reef tank.
My tank is 90 gallon and now 4 months old.
I have live rocks etc.
I keeps testing parameters always found Ammonia - 0
Nitrite - 0
Nitrate - 5 ppm
PH - vary 7.8 to 8.0, i add ph buffer to increase to 8.2. but few told me to maintain 7.8 as it may increase more and could be reason for fishes dying.
Salinity - 1.020 - 1.021
Temperature - 28 to 30 degrees (in summer)
I have my long tentacle anemone, club anemones without issue from 45 th day.
First round of all fishes died in few days - including clown, damsels, gobi, linckia star, unicorn
Second round all fishes died in few days.
Third round all fishes are success since 2 weeks - chromies, gobi, clown, wrasse etc
But Star fish still not succeeded, this time max 5 days it died.
What could be the problem?
The parameters i keep testing on daily basis.
Only PH 7.8 usually and if i add PH buffer then moves to 8.2.
Temperature 28 to 30 degrees usually.
I need expert advise on this.
I'd say that two nems in a tank that age is really rolling the dice as well...The salinity is too low for linkia as should be a minimum of 1.023-1.024 and temperature somewhat important. This is not a star for a beginner or in a tank that's not stable and should not be in a tank that contains snails, or certain hermit crabs. Changes alone in oh, and salinity will take them down.
This.The salinity is too low for linkia as should be a minimum of 1.023-1.024 and temperature somewhat important. This is not a star for a beginner or in a tank that's not stable and should not be in a tank that contains snails, or certain hermit crabs. Changes alone in oh, and salinity will take them down.