polyp extension

[rgentry123]

the polyps on a lot of my sps corals are retracted-any ideas why or how this could have happened? or how get them to come back out again?

params are -->

SG 1.026
ph 8.2
nitrates 5 ppm
calcium 500
temp 79
phosphates arent registering at all it seems

i have a regal, CB and an eibli x halfblack hybrid angel but i have never seen any of them pick at any coral in the tank.

 

[luther1200]

What is your Alk? And I'm sure you know this, but just because you don't see them nipping doesn't mean its not happening. Aside from that I would say maybe there not happy with the flow, either to much or to little.

 

[rgentry123]

What is your Alk? And I'm sure you know this, but just because you don't see them nipping doesn't mean its not happening. Aside from that I would say maybe there not happy with the flow, either to much or to little.

yeah, i know they still could be but i watch the tank a LOT, and ive never sdeem them show any interest in corals. i have 3 koralia # 4's in my 110 tank. do you think that is to much flow?

 

[luther1200]

No thats not to much flow. Actually maybe you need some more. I noticed I started getting a lot more PE after I added my MP20. I think the unpredictable flow is just as important as the amount. Do you have them on any kind of wavemaker or anything?

 

[luv4qt1004]

same here...sps are hard to care for. hard to figure out what is going on

 

[Am07f]

Yea, it could be your alk or maybe too much flow?

 

[driftin]

Do the polyps come out after the lights are off?

 

[KisselDanny]

Im having the same problem with my yellow tort. Almost no PE during the day but at night it opens fully.

 

[rgentry123]

the polyps come out a little more at night but not fully. i turned off 1 of my koralias to see if maybe too much flow but somehow i doubt it. i dont have a wavemakerfor them so maybe i can try somthing like that.

 

[njfish77]

what does it mean if you have more PE during the day than night?

 

[reefdogg1107]

what does it mean if you have more PE during the day than night?

IME this is usually due to a fish picking during the day, so at night when the fish are not out roaming about they extend. Keep a close eye on your fish during the day or move ther coral somewhere the fish might have a harder time getting to.

 

[advaquatics]

Whats your magnesium levels @?

 

[rgentry123]

Whats your magnesium levels @?

Not sure... That's the one test I don't have. Could this potentially be my issue?

 

[sjfishguy]

I would bet its the angels. I had a CB that I swore never picked, but got rid of him when I switched tanks. The PE is amazing now. There are several theads about angels and PE and many people report similar results as me. I would say its the angels, and with that many you will never have any PE.

 

[xtm]

what does it mean if you have more PE during the day than night?

It means nothing. Most corals have more PE at night because they usually feed at night.