Corals not doing well

bkayereefs

Community Member
View Badges
Joined
Oct 14, 2025
Messages
50
Reaction score
12
Location
california
Rating - 0%
0   0   0
Hey all, I’m completely lost. Recently I’ve noticed my corals all look ticked off, I had a sick fish as well, lost a lot of a GSP wall and now I’m noticing my torch’s flesh line is basically gone and brown. The trachy in the video used to be super vibrant, now its dull; the plug its sitting on is turning a brownish color. My acan is dealing with the same thing. I checked my parameters yesterday. I do water changes every Sunday with Coral Pro salt at 1.025ppm. I did notice my phosphates were gone with about a 5-10 in nitrates (according to Salifert kit) everything else was basically on par with what the coral pro salt says it should be. Alkalinity is was at an 8 yesterday, about 2 or 3 days after a water change. I haven’t changed a thing in my routine. Any ideas? I’m desperate
View attachment 20260415_173742_65972E11-F15E-40F0-8F6A-3C926A33067C.mov
 

Mebbid

Active Member
View Badges
Joined
Jun 3, 2017
Messages
444
Reaction score
400
Location
Jackson, MI
Rating - 0%
0   0   0
What's your parameters at?

From what I'm reading your phosphate dropped to 0.0? What was your last reading and when was it? Have you added anything in to consume phosphates like GFO?
 
OP
OP
B

bkayereefs

Community Member
View Badges
Joined
Oct 14, 2025
Messages
50
Reaction score
12
Location
california
Rating - 0%
0   0   0
What's your parameters at?

From what I'm reading your phosphate dropped to 0.0? What was your last reading and when was it? Have you added anything in to consume phosphates like GFO?
So I run Carbon in there and used to have phosguard, I removed the phosguard yesterday, but what I don’t understand is I had the phosguard on for months with no issue
 

Mebbid

Active Member
View Badges
Joined
Jun 3, 2017
Messages
444
Reaction score
400
Location
Jackson, MI
Rating - 0%
0   0   0
So I run Carbon in there and used to have phosguard, I removed the phosguard yesterday, but what I don’t understand is I had the phosguard on for months with no issue

So, phosphate binds with live rock and can leech out for long periods of time. If the phosphate backlog in the rock finally ran out, your phosphates could bottom out.

What was your previous phosphate reading and when was it taken?
 
OP
OP
B

bkayereefs

Community Member
View Badges
Joined
Oct 14, 2025
Messages
50
Reaction score
12
Location
california
Rating - 0%
0   0   0
So I run Carbon in there and used to have phosguard, I removed the phosguard yesterday, but what I don’t understand is I had the phosguard on for months with no issue

So, phosphate binds with live rock and can leech out for long periods of time. If the phosphate backlog in the rock finally ran out, your phosphates could bottom out.

What was your previous phosphate reading and when was it taken?
Gotcha, that makes sense. The last time I tested was a few months ago and I want to say I was at like a .25, I was getting lots of hair algae so I ran phosguard. Could low phosphates also contribute to a sick fish?
 

Mebbid

Active Member
View Badges
Joined
Jun 3, 2017
Messages
444
Reaction score
400
Location
Jackson, MI
Rating - 0%
0   0   0
Gotcha, that makes sense. The last time I tested was a few months ago and I want to say I was at like a .25, I was getting lots of hair algae so I ran phosguard. Could low phosphates also contribute to a sick fish?

I'd say they are likely unrelated. But that's a pretty big drop in a week. Very likely could contribute to the dulling of colors in the corals and it's not uncommon for GSP to melt back a bit after a big shift in nutrients.

What's sick about the fish?
 
OP
OP
B

bkayereefs

Community Member
View Badges
Joined
Oct 14, 2025
Messages
50
Reaction score
12
Location
california
Rating - 0%
0   0   0
Gotcha, that makes sense. The last time I tested was a few months ago and I want to say I was at like a .25, I was getting lots of hair algae so I ran phosguard. Could low phosphates also contribute to a sick fish?

I'd say they are likely unrelated. But that's a pretty big drop in a week. Very likely could contribute to the dulling of colors in the corals and it's not uncommon for GSP to melt back a bit after a big shift in nutrients.

What's sick about the fish?
Well that’s the thing is the shift couldn’t have been drastic, I left the same phosguard in the filter tower for months, and over the past few weeks it has gradually gotten worse. I have a clownfish that has been sick (dull colors, hasn’t been eating, sits near top of tank) and dosed ruby reef rally and it didn’t help. It’s so odd man there’s just something going on that I can’t figure out. I had a cleaner shrimp die too
 

dloberry

Active Member
View Badges
Joined
Feb 20, 2026
Messages
148
Reaction score
192
Location
Moses Lake
Rating - 0%
0   0   0
So it sounds like the changes in parameters may be what is happening. When a shift is too much at once it can cause a disruption to coral. Inverts are usually very sensitive to shifts as well and does not take much for them to die. As for the clownfish I am not entirely sure but swimming at top is jot alarming. Mine stay at the top and have for months. Not eating and discoloration is alarming.
 

dloberry

Active Member
View Badges
Joined
Feb 20, 2026
Messages
148
Reaction score
192
Location
Moses Lake
Rating - 0%
0   0   0
To help bring back the parameters add additional food, or try Brightwell Neo Phos. Try to stay away from too many bottle dosing though, when you fix one problem you will often create another. What seems like high phosphate or nitrates may not actually be horrible if the NO3 and NO4 are balanced.
 

TOP 10 Trending Threads

WHAT AMOUNT OF LIVE ROCK AND SAND SHOULD BE PRIORITIZED FOR OPTIMAL BIODIVERSITY/FILTRATION?

  • 100% live rock + bagged sand

    Votes: 34 27.4%
  • 100% dry rock + 100% live sand

    Votes: 44 35.5%
  • 50/50 live/dry rock, 50/50 live/bagged sand

    Votes: 27 21.8%
  • 75% live rock, 25% live sand

    Votes: 11 8.9%
  • 25% live rock, 75% live sand

    Votes: 8 6.5%
Back
Top