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Featured az nitrate remover warning

Discussion in 'Help and Advice' started by kevin g, May 5, 2015.

  1. kevin g

    kevin g Registered

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    i look after tank very well but cant get my nitrates below 30ppm on fish only with 40 kilo of rock i do weekly water change of 30 per cent.theres no floss used in my system.i started using az 8 days ago and the last two days have lost fish but all were fine till then.so gonna ween system off the az and not to worry on getting nitrates below 30ppm.
     
  2. Clearwater

    Clearwater Registered

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    with a fish only system nitrate of 30 won't do any harm, just some algal growth

    is your water change water made from 0TDS RO ?
     
  3. kevin g

    kevin g Registered

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    im using a brand new 3 stage ro unit have no way of testing tds
     
  4. Clearwater

    Clearwater Registered

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    you can get cheap TDS pens from E Bay some LPS also sell them or Advertisers on here like Little Ocean

    you should also let it run for a few mins before using the water is cleaner

    the incoming water will determine the TDS out, my incoming is around 75 TDS (soft water area) and Output before Di Resin is 2 to 3 ppm depending on temparature

    if you are in a hard water area the TDS will be higher in and out of the RO unit

    sound like your filtration capacity is inadequate for the amount of food being consumed

    extra Nitrate capacity can be provided with a Deep Sand Bed 4" in the display or a sump if you can accommodate one
     
  5. kevin g

    kevin g Registered

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    apart from dsb what else can i use in sump
     
  6. kevin g

    kevin g Registered

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    but with extra nitrate capacity mean higher nitrates how about alfa grogg on the trickle tower part of my sump
     
  7. Clearwater

    Clearwater Registered

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    Gorg only does Nitrite to Nitrate

    What you are missing is Nitrate to Nitrogen
    This needs anaerobic conditions

    Provided deep in live rock, DSB MM etc

    Algue beds are very helpful but you must harvest regular amounts to export the nutrients.

    Alternative would be running Bio Pearls with the effluent feeding into a skimmer
     
  8. kevin g

    kevin g Registered

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    ok if i add a deep sand bed in sump does it matter if sand has water pushing up throught it.if i use bio pearls how do i use them ie in a reactor and how do i get to connecting it too skimmer.
     
  9. kevin g

    kevin g Registered

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    if i do a 4 inch sand bed in tank does the whole tank need to be 4 inches and do i need any sand siffting star fish or clean up crew on it thanks
     
  10. Bob1888

    Bob1888 Registered

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    You could use siporax in the sump used them about 25 years ago and found them to be great for nitrates they have only just recently emerged back on the market a lot of people are having great results using them in egg crate boxes
     
  11. kevin g

    kevin g Registered

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    can i place it in media bags
     
  12. Clearwater

    Clearwater Registered

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    You can't have water pushing through as that would create aerobic conditions

    bio Pearls need to be in a reactor
    It's easy to put the effluent pipe near the Slimer intake
     
  13. Clearwater

    Clearwater Registered

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    Whole tank

    Wouldn't use a starfish

    Concha are good Strawberry or Orange lipped
     
  14. kevin g

    kevin g Registered

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    thinking of doing a 4 inch sand bed in last chamber of sump were return pump is but was gonna put return pump in a container so it doesnt suck sand up does this sound ok.
     
  15. Clearwater

    Clearwater Registered

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    That's OK

    Finer the sand greater the surface area and processing capability
     
  16. kevin g

    kevin g Registered

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    cool gonna do it friday wil i be ok doing 4 inches from the start and how long before it works can i seed it with sand from main tank thanks.
     
  17. Enzogobby

    Enzogobby Registered

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    My Nitrates are at a constant 50ppm and the fish could not be happier; it wasn't nitrates that killed your fish. Also, apart from Sps, I can keep and grow other corals fine.....I have now put a bunch of cheato in sump with 24hour light, just as experiment to see if it brings nitrates down. Never had an algae problem either and all-in, I just change a max of 70L a month in my 300L display tank; the sump is another 70L...I do have quite a bit of live rock in DT and mid section of sump filled with Rock Rubble....I think I fluked a good balance in my system.
     
    Last edited: May 6, 2015
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