Sps tips burning

DeepReef

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I’m almost giving up, I can’t figure out why my sps slowly dying .
the tips burning and eventually the coral getting stripped.
I check parameters every weekend, and find the kh, mag and cal are pretty solid, only thing I can’t control is phosphate which at the minute stands around 60ppm with Hanna checker, in another hand nitrate around 10-15
Advice greatly appreciated

IMG_4077.jpeg IMG_4070.jpeg
 

nereefpat

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Alk stands at 35 according to APEX.
35 would be a strange alk reading? Is that dKH, meq/L, ppm?

Apologies, meant to say PPB instead :anguished-face:.
Hanna phosphorus checker
60 ppb P would be about 0.18 ppm phosphate, which would be about 10x higher than seawater.
 
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DeepReef

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35 would be a strange alk reading? Is that dKH, meq/L, ppm?


60 ppb P would be about 0.18 ppm phosphate, which would be about 10x higher than seawater.
Absolutely, its a bit high.
I do run reactor with rowaphos in it, but I cant get it lower for the life of me, What would you recommend to lower Phosphate, apart from rowphos ?
 

FUNGI

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Absolutely, its a bit high.
I do run reactor with rowaphos in it, but I cant get it lower for the life of me, What would you recommend to lower Phosphate, apart from rowphos ?
Any of thiese (IMO & IME) work:

Cut down on feeding/change food
Refugium (but dont expect overnight changes)
Algae Scrubber (again not overnight)
NoPox (but with caution)
Lanthanum - (again, with caution)

Need to find the root of the issue should be first.......
 

nereefpat

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Absolutely, its a bit high.
I do run reactor with rowaphos in it, but I cant get it lower for the life of me, What would you recommend to lower Phosphate, apart from rowphos ?
I want to figure out the alk first. What is the alkalinity?
I run 0.25ppm with no issues.
Seawater nutrients and DT would be very different.
Yep. People run N&P in a wide range. This just is not a low-N&P-causing-burnt-tips type situation.
 

nereefpat

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If alk i stable, then I suspect there is something else going on. Maybe lighting, or flow, or water change schedule. Possibly high N & P aren't helping. IDK.

To me, I'm not sure that I would call that burnt tips.
 

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I get similar problems running GFO at times. I’d stop the rowaphos reactor for a couple months and see what happens. Seriously that could be the problem.
 
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DeepReef

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What does your alkalinity read?
IMG_2225.png

If alk i stable, then I suspect there is something else going on. Maybe lighting, or flow, or water change schedule. Possibly high N & P aren't helping. IDK.

To me, I'm not sure that I would call that burnt tips.
Yeah alk pretty much stable, I just can’t narrow it down. In term of light, I run ati hybrid with loads of PAR. 350-400 for the sps and 250-200 for lower part for the lps.
every other week I do water change around 40lt.
 

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