Sps stripping

[DeepReef]

In the last couple days some of my sps are stripping and I don’t know what is causing it ,
Couple of milli are stripping and I’ve just noticed joker is having the same fate .
Parameters most of the time are stable apart from the usual one p04.
Kh 7.7, cal 380, mg 1290 ,checked po4 twice this. Morning (30,20) with Hanna phosphorus checker.
don’t know what Im doing wrong.

 

[T-J]

RTN/STN can be caused by a number of different things.
What are your PO4 numbers? (I don't understand what 30/20 means)
What are your Nitrates?
How new is the tank? Temperature? What light are you using? What kind of PAR are the corals getting? How long have they been in the tank.

 

[DeepReef]

RTN/STN can be caused by a number of different things.
What are your PO4 numbers? (I don't understand what 30/20 means)
What are your Nitrates?
How new is the tank? Temperature? What light are you using? What kind of PAR are the corals getting? How long have they been in the tank.

Tanks is been running for almost 14 months, I have ATI hybrid light. nitrate is between 5 and 10.
tested p04 twice and comes back 30ppb, which is 0.09 ppm, temp almost stable during the night dropping to 25.9 and during the day is around 26.02. the frags have been in the tank for a good while,
Don't have a clue about the par,

 

[tehmadreefer]

All that algae growth is a clue!

 

[T-J]

All that algae growth is a clue!

I didn't notice at first, but in that first pic, is that a bunch of Cyano I see in the background glowing red?
If you have cyano, you have parameter problems. Also, you may have flow issues. What are you doing for flow in the tank?

 

[monkeyCmonkeyDo]

Pretty high phosphates... lol.
Whats your alk?
D

 

[DeepReef]

I didn't notice at first, but in that first pic, is that a bunch of Cyano I see in the background glowing red?
If you have cyano, you have parameter problems. Also, you may have flow issues. What are you doing for flow in the tank?

It was bit of cyano just on that piece of rock, don't have anywhere else tho.
I have two MP40 on each side, so plenty of random flow.

 

[DeepReef]

Pretty high phosphates... lol.
Whats your alk?
D

between 7.7 and 8

 

[IslandLifeReef]

In the last couple days some of my sps are stripping and I don’t know what is causing it ,
Couple of milli are stripping and I’ve just noticed joker is having the same fate .
Parameters most of the time are stable apart from the usual one p04.
Kh 7.7, cal 380, mg 1290 ,checked po4 twice this. Morning (30,20) with Hanna phosphorus checker.
don’t know what Im doing wrong.

As far as your PO4 test goes, if you are using the Hanna ULR checker, a reading of 20 and then a reading of 30 are all within the tester error range. That tester has an error of +/- 5 plus and addition 10% of the reading. So if the actual phosphorus level is 25, the tester could give you a reading from 18 to 33.

 

[Rmckoy]

I recently went through the exact same thing .
lost a large tabling acro and a few sticks .
even though alk , Sg , temp and nitrates have all been stable
7.5 dkh , 1.024 , 78° and 10 ppm
Phosphorus was measured with the Hanna ulr