Birdsnest Turning White at Base

Discussion in 'Corals' started by Lizardgi, Jul 29, 2011.

  1. Lizardgi

    Lizardgi I used to have lizards

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    My week old birdsnest is beginning to bleach a bit at the base. It appeared to be doing fine at the bottom of the tank and only started doing this when I moved it higher up in the tank two nights ago. It was at the bottom for a week. Do you think I should leave it as is or move it down a bit? Other corals are still doing okay.

    Tank parameters are below:

    Temp 78
    Salinity 1.025
    pH 7.8
    Ammonia 0
    Nitrates 0
    Nitrites 0
    Alk 8
    Phosphate 0
    I didn't test for Calcium or Magnesium tonight but I can if needed!

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    Lizardgi, Jul 29, 2011
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  2. Lizardgi

    irensing Controversial Reefer

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    See what other people have to say, but if my birdnest (or SPS in general) start to bleach from the bottom at a rapid pace I cut it where it is still healthy and glue it to a new plug.
     
    irensing, Jul 29, 2011
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  3. Lizardgi

    irensing Controversial Reefer

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    also, test your calcium and raise your PH.
     
    irensing, Jul 29, 2011
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  4. Lizardgi

    little_fish Moderator

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    I too would probably cut it and reglue, i would also move it back to the bottom.

    I think your alk and pH are fine though
     
    little_fish, Jul 29, 2011
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  5. Lizardgi

    irensing Controversial Reefer

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    I've never really though too hard about it. I always thought 7.8 was too low. Is that a pretty typical pH? I always try to stay between 8.1-8.3. My SPS do not like 7.8.

    I found this interesting articles:

    A Simplified Guide to the Relationship Between Calcium, Alkalinity, Magnesium and pH by Randy Holmes-Farley - Reefkeeping.com

    Here is an excerpt:

    At low pH (say, 7.8), much higher concentrations of calcium and alkalinity can be maintained in solution than at higher pH (say, 8.5). For this reason, aquarists whose aquaria are low in pH often claim that they have no problem maintaining high levels of calcium and alkalinity, and rarely remove calcium carbonate from their pumps, while other aquarists with much higher pH do not understand why they cannot maintain such conditions in their aquarium, or why their pumps often rapidly clog. The effect of having more carbonate at higher pH is one of the main drivers of that difference (the other being that many corals may actually demand more calcium and alkalinity at higher pH, as they can calcify faster at higher pH). As a follow up, do not assume that low pH is better because it allows easier maintenance of calcium and alkalinity, and clogs pumps more slowly. It is also more stressful for many calcifying corals simply because they have a harder time calcifying at lower pH. That increased difficulty is due to the fact that they have to pump out a proton (H[SIZE=-1]+[/SIZE]) when they make carbonate from bicarbonate, and the lower the pH, the more H[SIZE=-1]+[/SIZE] already in solution, and the harder it is to pump out the additional H[SIZE=-1]+[/SIZE].
     
    irensing, Jul 29, 2011
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  6. Lizardgi

    little_fish Moderator

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    A pH of 7.8 isnt that low, infact many of us have our pH right at that. What is more important is stability, if you pH is stable around 7.8 i wouldnt worry.
     
    little_fish, Jul 29, 2011
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  7. Lizardgi

    Smitty

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    Probably too much light for it too soon? I'd lower it down some in the tank.
     
    Smitty, Jul 29, 2011
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  8. Lizardgi

    Lizardgi I used to have lizards

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    Thanks for the tips! Due to high CO2, my pH is stuck at 7.8 for now. I'm going to cut and reglue today and move it back down for a few weeks. I'm in no rush to get it placed, I just thought more light would be better.
     
    Lizardgi, Jul 29, 2011
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  9. Lizardgi

    irensing Controversial Reefer

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    I think birdnest would do better closer to the lights, however, you have to move it up slowly as to not shock it. I have my pocillapora frag rack about 2 inches from the surface of the water.
     
    irensing, Jul 29, 2011
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  10. Lizardgi

    little_fish Moderator

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    Ya, they do better with the higher lights, but they are so sensitive they can be burned very easily with a sudden change in light intensity
     
    little_fish, Jul 29, 2011
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  11. Lizardgi

    Lizardgi I used to have lizards

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    I must have burned the poor guy out!
     
    Lizardgi, Jul 29, 2011
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  12. Lizardgi

    irensing Controversial Reefer

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    how fast is he bleaching? I've seen an entire golf ball size colony go in about a day or so. You could almost watch it receed with the naked eye. You should probably re-frag him sooner than later.
     
    irensing, Jul 29, 2011
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  13. Lizardgi

    Lizardgi I used to have lizards

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    It's not going super fast, but I will be re-fragging within the next 15 minutes.
     
    Lizardgi, Jul 29, 2011
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  14. Lizardgi

    scummy

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    Check it for bugs. You may have something munching on it.
     
    scummy, Jul 29, 2011
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  15. Lizardgi

    Lizardgi I used to have lizards

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    Well it's been about a week and the re-fragging has seemed to work. No extra bleaching (or bugs) that I can see. I am noticing a very minor bit of new growth on the tips, so that must be good! The semi-bleached sections that I cut off I also re-fragged just to see if they will grow. There still is a bit of life to them so we'll see what happens. Thanks to everyone for the advice!
     
    Lizardgi, Aug 4, 2011
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  16. Lizardgi

    ErinCahir Sausage Wrangler

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    Glad to hear it's looking better for you!
     
    ErinCahir, Aug 4, 2011
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