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  1. #1
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    Feb 2008
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    Brown Algea Problems

    I moved about 7 months ago and the tank came with me. I originally had it set-up for about 2 years. Whe I moved I used a plenum system for the first time with great results. Always had a nitrate problem until I started to use the Plenum. After setting up the tank I had a few issues with green hair algea, which was to be expected. I continued to test my water parameters until the nitrate level was down to zero and then I removed the power heads from the exhaust tubes for the plenum. For the las 3 months every night I go home after work there is a brown algea plume all over the tank. Every night I scrape off the algea only to find it again the next day. Before I moved I never had an issue with algea. The only differences from then until now is I am using a plenum system and I upgraded my lighting system from 2 48" power compact flourescence and 2 Blue Antinics to 2 150w HQI buls, 2 Blue Atinic Bulbs and 2 Compact Flourescence. CAN ANYONE HELP!!!! It is such a beautiful addition to the living room, but the algea is mucking it up.

  2. #2
    Former Moderator a4twenty's Avatar
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    to Aquaria Canada

    how long ago did you change the lighting? how old are all the bulbs?

    why did you stop using the plenum?

    could you tell use some more about your system.....

    tank size?
    Skimmer?
    sump?
    refugium? , macro algae?
    RODI?
    Flow rate?
    Clean up Crew?
    bio-load? ( Fish etc. )
    current water params?
    `

    120S RR tank with 60G basement sump / fuge

    Return Pump: Little Giant 4-MDQX SC
    Water Movement: MP40W, Seio 1500, (2) Hydor K4's
    Lighting: 400W SE MH with 10K Venture
    Skimmer: Euro-Reef RS250 with gate valve
    Other: RODI, RDSB, PO4/AC reactor


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  3. #3
    Senior Member solowma's Avatar
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    This maybe a stupid question, but what is a plenum system? I know what it is in the hvac world but no the reef system.
    150 (reef) 56 (FOWLR)
    75 gal sump 25 gal refuge
    300lbs CaribSea Aragonite Reef Sand
    280 lbs of Assorted rock
    Tunze 9010 skimmer, Current USA 48" Fixture
    1 cleaner shrimp, pistol shrimp
    50 blue legged hermit, 15 nausaurus/astrea snails
    Yellow tang, 2 clowns, 1 blue chromis, 1 yellow watchman 1 corral beauty
    Colt coral, Frogspawn, Bubble, Donut coral, Mushrooms,Starburst green, Green and orange polyps an Umbrella coral, Purple Long Tentacle Anemone.

  4. #4
    Former Moderator a4twenty's Avatar
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    a plenum is a area left under the sand bed to allow denitification to take place. by using some PVC pipe, egg crate and layers of screens you can create a 'dead' zone of low oxygen which allows bacteria to grow that consumes nitrogen instead.
    `

    120S RR tank with 60G basement sump / fuge

    Return Pump: Little Giant 4-MDQX SC
    Water Movement: MP40W, Seio 1500, (2) Hydor K4's
    Lighting: 400W SE MH with 10K Venture
    Skimmer: Euro-Reef RS250 with gate valve
    Other: RODI, RDSB, PO4/AC reactor


    My Gallery

  5. #5
    Junior Member
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    Feb 2008
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    6

    Info regarding my tank

    60 gallon tank

    Water Parameters:
    Salinity 1.024
    Ammonia = 0
    Nitrates = 10
    Nitirites = 0
    Phosphates = range 0-0.5
    pH = 8.3
    Temp = range 79-81
    Calcium = range 420-440

    Prism Skimmer w/ Phosorb in canister
    Wet/Dry filter w/ bio-balls
    Plenum system
    3 power Heads

    Fish:
    Yellow Tang
    Sohal Tang
    Percula Clownfish
    Copper-Band Butterfly fish

    Corals:
    3 different types of Xenias
    Branch Hammer Coral
    Frogspawn Coral
    4 types of mushrooms
    Ricordia mushrooms
    Button Polyps
    Star Polyps
    Moon Brain Coral
    Red Lobo Brain Coral
    Orange Zoos
    1 SPS coral, not sure of family (given as a gift from fellow reefer)
    Lighting
    Bulbs 6 months old
    2 150w HQI - on from 10:00 am - 8:00 pm
    4 Compact Flourescence - same cycle as HQI
    4 Blue atinic bulbs - on from 8:30 am - 10:00 pm

    I changed from Instant Ocean to Red Sea Salt about 6 months ago. Was having a small issue with pH not staying consistant w/ Instant Ocean. I feed the fish 2 cubes of mysis shrimp or 1 mysis shrimp and 1 brine shrimp fortified. Every other day a piece of Nori hangs in tank for Tangs. I do water changes every 3 weeks at 15% change. I have been using RO/DI water. If I'm missing anything let me know.

  6. #6
    Former Moderator a4twenty's Avatar
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    Quote Originally Posted by deadguyale View Post
    60 gallon tank

    Prism Skimmer w/ Phosorb in canister
    Wet/Dry filter w/ bio-balls

    Fish:
    Yellow Tang
    Sohal Tang

    i think these are going to be the biggest cause of your problems.

    tangs are poo factories and are probably polluting the water quite bad for the size of tank. ( the sohal can grow to 16" and a 180G tank is recommended, the yellow grows to 8" and is recommended for a 100G tank )

    your skimmer isn't a very good one which compounds the tang pollution.

    the real big problem is the bio balls in the wet / dry filter. these filters are good at treating ammonia and nitrites but are a nitrate factory. food and detritus gets caught in the filter and continuously pollutes the tank. do you also have sponges at the entrance of the wet dry??

    i would slowly start removing the bio balls and you can replace them with LR but the rock has to be submerged. remove any mechanical filtration ( ie. sponges ) or clean it daily. anywhere food or detritus can build up will always cause a nitrate and phosphate problem which will always end in an algae problem. i would also consider changing your fish to some more suited to the tank.

    HTH and keep asking questions, we are here to help :b15:
    `

    120S RR tank with 60G basement sump / fuge

    Return Pump: Little Giant 4-MDQX SC
    Water Movement: MP40W, Seio 1500, (2) Hydor K4's
    Lighting: 400W SE MH with 10K Venture
    Skimmer: Euro-Reef RS250 with gate valve
    Other: RODI, RDSB, PO4/AC reactor


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  7. #7
    Junior Member
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    Feb 2008
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    Any suggestions on the type of skimmer to use for my tank size?

  8. #8
    Former Moderator a4twenty's Avatar
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    Quote Originally Posted by deadguyale View Post
    Any suggestions on the type of skimmer to use for my tank size?
    does it have to be hang on?
    `

    120S RR tank with 60G basement sump / fuge

    Return Pump: Little Giant 4-MDQX SC
    Water Movement: MP40W, Seio 1500, (2) Hydor K4's
    Lighting: 400W SE MH with 10K Venture
    Skimmer: Euro-Reef RS250 with gate valve
    Other: RODI, RDSB, PO4/AC reactor


    My Gallery

  9. #9
    Junior Member
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    Feb 2008
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    No. I would actually like to have one to store under the tank in my stand. One for esthetics two, the lights are very close to the skimmer causing some nasty green muck building up on the return.

  10. #10
    Former Moderator a4twenty's Avatar
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    can you convert the wet dry?

    if not could you swap it out for a sump?

    what are the dimensions?

    could yo post a picture of the area under the tank?

    :b6:
    `

    120S RR tank with 60G basement sump / fuge

    Return Pump: Little Giant 4-MDQX SC
    Water Movement: MP40W, Seio 1500, (2) Hydor K4's
    Lighting: 400W SE MH with 10K Venture
    Skimmer: Euro-Reef RS250 with gate valve
    Other: RODI, RDSB, PO4/AC reactor


    My Gallery

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