Help I don't know whats wrong

[ruger11]

I'm fairly new to salt water but things aren't going well. I have a 55 gallon tank with ~40 lbs of live rock. I have 5 fish, A toby puffer fish, a clown pair, a pajama cardinal, and a watchman golby, I also have a clam which I believe is a leafy jewel box (got him accidentally but its doing well). The problem is some, not all of my coral is dying. I did a water change 2 weeks ago, my parameters, are
Salinity: 1.026
KH:10.7
Mg:1900ppm
Calcuim:475ppm
Amonia:0-.1 ppm
Ph:8.3
Nitrate and Nitrite 0 ppm
My light is a coral light and at 64% white and 100% blue as I seen suggested on reef2reef

My corals doing bad are Zoanthas, maze coral, and Trumpet coral in low flow and medium depth, the ones that died are a Hammer coral and a Bubble tip anaome
My corals that are extremely thriving are A button coral, green star grass coral, a green carpeting coral that I dont know what it is, and a circular sps coral I dont know the name of
My fish are doing great. My clam, and clean up crew are also going well

Everything started going wrong when I did a bad thing with an unfortunate event. In one night I changed my filter ( and removed it but transfer all media) from a over the top filter to a canister filter and changed my light level from 80% white 80% blue to 64% white and 100% blue.

HELP What should I do to save my coral and my tank

 

[Dragon52]

#reefsquad

 

[html]

looks like DKh high with high magnesium, also ammonia readable while 0 nitrates means no bio filtration

 

[Arthacker87]

Pictures also help. How long have they been in the tank? Light adjustment period? What kinda lights

 

[Daddy-o]

Add some Prime to get that ammonia to 0

 

[Raege]

Sorry for your troubles
Cpl things may help reefsquad
How old is tank ( some on ammonia not accurate) may be false reading
What are you using for test kits
Water source
DKH and mag I agree as above seem high

 

[html]

Add some Prime to get that ammonia to 0

You need minimum nitrate and phosphates readable

 

[html]

And you need bio filtration like live rock

 

[luke fortunato]

your nitrates are to low- zoas and other corals need some nitrate to eat. Should aim for around 5-10 ppm

 

[ruger11]

Sorry for your troubles
Cpl things may help reefsquad
How old is tank ( some on ammonia not accurate) may be false reading
What are you using for test kits
Water source
DKH and mag I agree as above seem high

I use API and Red sea test kits (The amoina was unreable but there was a minor possiblity that there was a some ammoniaand the tank is 5 months old. The water source is from my local reef shop their TDS is 0 (in ro water)

 

[ruger11]

your nitrates are to low- zoas and other corals need some nitrate to eat. Should aim for around 5-10 ppm

How do I up Nitate

 

[ruger11]

And you need bio filtration like live rock

I have ~40 lbs of live rock along with bio filtration in the canister filter (Bio Balls and ceramic beads)

 

[luke fortunato]

dont do a water change for a little and add fish food

 

[ruger11]

Pictures also help. How long have they been in the tank? Light adjustment period? What kinda lights

The light is a horizon aqua coral led light strip
Here are some pics of the dying coral and the tank as a whole

 

[html]

wait until your tank mature and add corals slowly

 

[ruger11]

dont do a water change for a little and add fish food

Thanks will try

 

[ruger11]

wait until your tank mature and add corals slowly

My tank is 5 months old so coral introduction happend months ago and they did fine until recently

 

[vetteguy53081]

Take water sample to trusted LFS and have them test water for you and stay away from API kits. They WERE once good kits
Go blue at 80% and whites at 25% for the time being. What is your salinity ? (have that tested at LFS also.

 

[ruger11]

Take water sample to trusted LFS and have them test water for you and stay away from API kits. They WERE once good kits
Go blue at 80% and whites at 25% for the time being. What is your salinity ? (have that tested at LFS also.

salinity is 1.026

 

[ruger11]

1.026 what are LFS