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Thread: Green Water

  1. #1
    Rodgec1's Avatar
    Rodgec1 is offline Macheira

    Tank is cycling. Can I buy a Moorish Idol yet?
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    Green Water

    Green water is often referred to as "pea soup". Free floating single celled algae, grows at such a rapid rate that it turns the water green.
    Water changes are not very helpful, as the algae spores can be found in almost every water source. The only other ingredients needed for a green water outbreak are high nutrient levels (nitrate) and intense lighting.
    As with most nuisance algae, this single celled planctonic algae is capable of photosynthesis (light is used to create energy). During lighting periods oxygen is being produced during this process.
    At night, the algae uses up oxygen from the tank, this can, if serious enough, suffocate the fish. Tanks with green water should therefore be very well oxygenated.

    Set up date: January 2006 Display Size: 120 Total Water In System: 120 Do you have a sump? YES
    Do you have a refugium? NO Amount of Liverock: 120+ Depth of Sandbed: 3 Salinity level: 1.024
    ALK level: 7.8 Ammonia: 0 Nitrate: 0 Nitrite: 0
    What lighting are you using? What skimmer are you using? Calcium Reactor? Calcium level: 415
    48" Nova Extreme Current T5 H&S 150-F2001 Internal Skimmer Manual daily dose 2 part.
    Fish and Inverts: 1 purple damsel + 1 brittle star. Time to shut down. Corals: Various zoos.
    Other Equipment: A couple of Tunzie's, Mag 1200 and Running a 3 stage RO/DI unit for water. Phospate reactor running with Carbon at the moment.
    120gal + 35gal sump with auto top-off ,
    8x54watt T5HO /4x10K + 4x460NM Actinic
    1xMJ1800,
    1 Seio 1200,
    2Tunze 6060 Stream running 24/7
    H&S 150-F2001 Internal Skimmer
    Phosban Reactor with carbon,
    Mag 2400 return pump with SQWD,
    150+ lbs rock.

    Corals: Blue striped & Green hairy Mushrooms, Green + pink + blue Zoos, 2 Open Green Brain, Candy canes, Devils Hand Leather, Anthelia, Hammer coral, Pink-tip Frogspawn, Pink doughnut and a few Acro colonies.

    Livestock: A Yellow Tang, 1 Pacific blue Tang, 2 Yellow-tail Damsels(big mistake), 1 Royal Dottyback, 1 Coral Beauty, Foxface Rabbitfish, 2 green chromis, Brown Brittle Star, 1 Cleaner Shrimp, 6 snails, 4 Blueleg / Redleg Hermit Crabs.

  2. #2
    Monti's Avatar
    Monti is offline %$#@! Crabs!

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    Re: Green Water

    Oxygen will maintain a living environment for the fish. That is true.
    But any system with green water needs to have a major overhaul.
    The nitrates are too high for some reason.
    That needs to be addressed to remove the food source for the algae growth.
    Then the tank will clear up.

    Set up date: July 2014 Display Size: 65 gals Total Water In System: 65 Do you have a sump? NO
    Do you have a refugium? NO Amount of Liverock: 50 Depth of Sandbed: 6" aragonite Salinity level: 0
    ALK level: Donno Ammonia: 0 Nitrate: 0 Nitrite: 0
    What lighting are you using? What skimmer are you using? Calcium Reactor? Calcium level: Donno
    Fluorescent None no
    Fish and Inverts: 4 Angel Fish Corals: zip
     

  3. #3
    Clintos's Avatar
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    Re: Green Water

    Is this refering to phytoplankton?

    Set up date: April 2009 Display Size: 90 gallon Total Water In System: 120 gallon Do you have a sump? YES
    Do you have a refugium? NO Amount of Liverock: 70lbs Depth of Sandbed: 4inches Salinity level: 1.023
    ALK level: Ammonia: Nitrate: Nitrite:
    What lighting are you using? What skimmer are you using? Calcium Reactor? Calcium level: 440ppm
    8-t5 h.o 4-20 000k,2-figi,2-12000k none no
    Fish and Inverts: 1-mandarin Corals: zoo's,ricordia,paly,chalice,sps,acan,lps etc
    Other Equipment: 600to800 gph lift pump 4 output's from the gravel in DT 400 gph lift pump 2 outputs on the side of DT

  4. #4
    Clintos's Avatar
    Clintos is offline Member

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    Re: Green Water

    Quote Originally Posted by Monti View Post
    Oxygen will maintain a living environment for the fish. That is true.
    But any system with green water needs to have a major overhaul.
    The nitrates are too high for some reason.
    That needs to be addressed to remove the food source for the algae growth.
    Then the tank will clear up.
    true

    Some thing's that can be done are:

    add more filterfeeder's for the future

    add some algae loving pod's for the future

    reduce light duration

    use phosphate absorbing media

    lighten fish load

    do some extra water changes

    lower amount of feeding

    etc

    Set up date: April 2009 Display Size: 90 gallon Total Water In System: 120 gallon Do you have a sump? YES
    Do you have a refugium? NO Amount of Liverock: 70lbs Depth of Sandbed: 4inches Salinity level: 1.023
    ALK level: Ammonia: Nitrate: Nitrite:
    What lighting are you using? What skimmer are you using? Calcium Reactor? Calcium level: 440ppm
    8-t5 h.o 4-20 000k,2-figi,2-12000k none no
    Fish and Inverts: 1-mandarin Corals: zoo's,ricordia,paly,chalice,sps,acan,lps etc
    Other Equipment: 600to800 gph lift pump 4 output's from the gravel in DT 400 gph lift pump 2 outputs on the side of DT

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