PO4 in an SPS tank

Discussion in 'SPS Corals' started by scubaninja, 25 Mar 2009.

  1. scubaninja

    scubaninja

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    Common you SPS freaks, lets hear what your PO4 levels are sitting at. I am trying to figure out what level to try and maintain my tank at to get good colours and polyp extension etc without having killing the corals with too little. What kit are you using aswell cause i read that you need it to be as low as 0.0**. So if you have good colour and good extension why not share a bit of your knowledge:thumbup:
     
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  3. scubaninja

    scubaninja Thread Starter

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    Oh, and if you are using anything like Zeolith or just heavy skimming + low bioload please post that too:thumbup:
     
  4. Itsme

    Itsme

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    Effects of Rowaphos

    I'm certainly not an SPS specialist but I can share my experience recenctly with phsophates in my tank. I have had my new 1200L tank runnning since November 2008. I was not runnning any PO4 remover at all, liquid or rowaphos and found that the coraline algae growth was just not what I was expecting considering I had watch my previous tank mature and growth was substantailly better over the same time and the typical algae blooms seemed to be persisting.

    I then decided to spend the money on a P04 test kit, ran the test, got a fright and went and bought another test kit to check that the first was right. Well still got a fright and realised that P04 in Pietermaritzburg water was a problem. So Rowahos has gone in and I have been actively runnning tests and keeping the PO4 levels to as close to 0 as possible and I can see the difference is Coral extensions, coraline growth on the rocks and general hapiness of the tank after removing the PO4's. The accumulation of PO4 makes a huge difference and I suggest that you get it to as close t 0 as you can as quickly as you can!
     
  5. Tony

    Tony

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    Mine sits at 0.1ppm with a Red sea test kit. I have no DSB, use Rowaphos and carbon dose with vodka. I have found my colours better with actinics. I used to run 14000K halides with 10000K T5's. Now I use actinic T5's
     
  6. Mekaeel

    Mekaeel Moderator MASA Contributor

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    The idea to obtain good colours in your SPS is nutrient removal (not forgetting lighting flow etc...). Skim heavy, run po4 media as directed on the product packaging you are using, and use macroalgea to assist.
    As I discussed with you over the phone, on my system which is just over 1000l, I run zeolits for 800l of water. Remember my tank isnt stocked too heavy or too low. This will give you an idea on how much to use in your tank.
    Also keep in mind, Zeo disadvises the use of any DSB's or macroalgea. However some reefers have used them with no ill effects.
    Sorry but I cant comment on my P04 levels as I use a Tropic Marin test kit and it is not effective as Deltec, Lamoette etc...
     
  7. Monti

    Monti

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    Ive never tested PO4 as the test kits for this are often not very accurate. I thus treat for it as if it is there, because it probably is, if that makes sense?
     
  8. Broder

    Broder Mudshark

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    DSB, ATS, no skimmer, moderate stocking 15% water changes every week with NSW. My Salifert test shows 0.00 constantly. Nitrates are 0.
     
  9. Tony

    Tony

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    Prodibio is also a brilliant help with nutrient reduction
     
  10. scubaninja

    scubaninja Thread Starter

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    Thank you for your input guys, but the thread wasnt how to reduce levels, it was what levels your tanks are at and your colours. That is what i want to know about
     
  11. Mekaeel

    Mekaeel Moderator MASA Contributor

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    :whistling:
     
  12. scubaninja

    scubaninja Thread Starter

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    i appreciate your input mek:) I have heard all of this from you already so that is part of my own knowledge already:) what i wanted to know was what exactly are your PO4 levels at, be it 0.1, 0.01 etc, and if your corals colours had 'popped'(been hearing that term quite a bit lately). SO i could find out what range to aim my PO4 levels at. on RC i saw it as 0.05 - 0.07, but there are different answers there and i am not really familiar who is talking sense and who is talking rubbish on RC so i wanted the Gurus hear to answer:p

    I want to get a really accurate PO4 test kit to test this when i have some cash so i was hopin to be educated now rather than later
     
  13. Midasblenny

    Midasblenny

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    Quite simply aim for as low as possible and you will have good colouration in the sps.0 is best but even natural reefs have a reading of 0.01ppm apparently.
     
  14. scubaninja

    scubaninja Thread Starter

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    thanks midas, much appreciated:thumbup: How low is too low though? I remember reading that too low will kill your corals because they do need a bit
     
  15. Andreas

    Andreas

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    Readings like that should be really hard to maintain.Rather do as midas has suggested and try and keep it as low as possible or at least undetactable
     
  16. Jaco Schoeman

    Jaco Schoeman MASA Contributor

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    Hey Scuba. Hope I can help. I have mainly LPS in my tank, except for one hammer that I put in a few days ago. I am running a skimmer, rowa and macro algae. Bot my Red Sea and the LFS (Tropic Marine) test kits for PO4 does not even color up at all!! Not even a bit of color, just crystal clear!! The LFS says this very good, and they do not see this regularly. So what does this have to do with SPS? Well, the hammer I put in was a brownish color under MH in the LFS. In my tank, under T5's, it really extended to a huge bush, and the color is just amazing. The guy at the LFS said that it will color up in time, to become nice green with pink tips, well, that time was within a day for me!!!

    I have about 5 different algae species in the tank, which is growing like crazy!! Even if I just break ir off, and place it somewhere else, it grows as if on steroids.

    I do a 20% water change every fortnight, and only run carbon, skimmer, and a new DSB (so that does not count)

    Seeing what I have seen with the SPS, I would recon you should keep your PO4 as low as possible, by any means possible.
     
  17. scubaninja

    scubaninja Thread Starter

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    sweety:) i want to know a range to aim for, 0 is good, but say if for some reason i am able to maintain a super low nutrient system when is too low
     
  18. Jaco Schoeman

    Jaco Schoeman MASA Contributor

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    Just on the above... I have seen my algae go white, (due to too little phosphates to live from I guess) and then they stop growing alltogether, I the just cut off the RowaPhos for a day or two, and the put it back on... After about a week, the color are back and they grow like crazy again. This all happened with no ill effect on the coral, so I think it is safe to say they are a good indication of too low phospates.
     
  19. Midasblenny

    Midasblenny

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    Aim for zero, some lps corals like open brains will not be as happy with a zero ppm tested though as i used to know a reefer who dosed with sodium nitrate to keep levels at 10ppm just for the brains. Sps will be happiest with a zero reading.
     
  20. Monti

    Monti

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    I dont think there is such a thing as too low, in that its very difficult to actually get to that level where there are too few phosphates for sps. Just aim to get it as low as possible.
     
  21. trad

    trad Fish, thats the word!

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    if your sps are brown or dull you have way o much phos
     
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