Everything in my tank seems to be doing just fine except all 3 of my acans are shriveling up. One hasn't been moved at all, but the other two I have moved a number of times to see if that makes a difference. Levels in the tank are good. Any help here would be appreciated.
Any idea why my acans are dying
- Thread starter Eddie79
- Start date
Tank2379
Active member
Are your LED's cranked up all the way? They do like a little dirty water. I would bring that one down from high up they my be getting blasted with too much light.
trackfast
Princess Trainer
I would place the chalice and the acans in shade; maybe in a lower flow area.
ultimatemj
Active member
I'm skeptical about the lights being the problem...
I'd think they would lose color and then brown before shriveling and showing skeleton.
What's your PH, ALK and N03?
If the first 2 are off the can 'burn' and if the N03 are too low (too clean) they can starve.
And what about flow? If blowing hard 24/7 for SPS that could keep them from opening/feeding.
Pics?
Tapa
I'd think they would lose color and then brown before shriveling and showing skeleton.
What's your PH, ALK and N03?
If the first 2 are off the can 'burn' and if the N03 are too low (too clean) they can starve.
And what about flow? If blowing hard 24/7 for SPS that could keep them from opening/feeding.
Pics?
Tapa
ultimatemj
Active member
Also how long have they been in the tank? If more than a month or 2, was there a noticeable change?
Tapa
Tapa
SkullV
New member
You're thinking backwards, too much light and they would bleach, too little light and they would brown.
ultimatemj
Active member
Maybe, I've heard brown=sunscreen.
Tapa
Tapa
SkullV
New member
Where did you get that information? I would be interested in seeing the study that shows that high light increases zooxanthellae production and reduces phosphorescence.
Are you sure you didn't hear green = sunscreen? At least that rhymes
and is more accurate.
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ultimatemj
Active member
I'll look for the browning thing later, but I do have the following about bleaching from an LED mfg website
Coral bleaching is when a coral loses its symbiotic zooxanthellae (what gives them color). When corals are “stressed,” they often expel their zooxanthellae, leading to a lighter or completely white appearance (hence why we call it “bleaching.” In nature, it can be caused by a multitude of factors, including:
- Dramatic chance in water temperature
- Increased solar radiance (PAR and UV band light)
- Changes in water chemistry or salinity
- Bacterial infections
- Silt and run-off
- Herbicides, pollution and cyanide
Tapa
Coral bleaching is when a coral loses its symbiotic zooxanthellae (what gives them color). When corals are “stressed,” they often expel their zooxanthellae, leading to a lighter or completely white appearance (hence why we call it “bleaching.” In nature, it can be caused by a multitude of factors, including:
- Dramatic chance in water temperature
- Increased solar radiance (PAR and UV band light)
- Changes in water chemistry or salinity
- Bacterial infections
- Silt and run-off
- Herbicides, pollution and cyanide
Tapa
SkullV
New member
That would be correct information of the many causes of bleaching. High light as you can see causes expelling of symbiotic algae and not excess production like I stated. When the coral is getting enough nutrients it ceases zooxanthella production because it doesn't need it. Browning is a result of not enough light (or other non light related factors) causing an increase in zooxanthella production.
In this instance high light could also cause the coral to shrink because it does not need as much zooxanthella exposed to the light. Eddie, I agree with everyone who says shade the affected LPS pieces.
In this instance high light could also cause the coral to shrink because it does not need as much zooxanthella exposed to the light. Eddie, I agree with everyone who says shade the affected LPS pieces.