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  1. #1
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    light green algae

    I have light green algae speading on my live rock. It looks like it is painted on, even on what little coroline algae I have. The tanks about 4-5 months old. Levels are fine, except Nitrate is 20-40. I have very little light for now, just 1 fluorescent bulb. Is this a bad thing?

    Please advise.
    Thanks, Mark

  2. #2
    Senior Member mickyfin's Avatar
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    Well - with new tanks, algae out breaks are pretty common. Is this a reef tank?
    Don't Panic Feel free to visit my blog -> Internet Tough Guy.

  3. #3
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    No, plan to make it semi-reef when I have money for lights. It's a 46 gal. bowfront.

  4. #4
    Senior Member mickyfin's Avatar
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    Cool

    To answer your question, algae in and of itself is not a BAD thing, however, it can look ugly and increases maintenance and cleaning. It won't hurt your fish or live rocks (unless it gets REALLY Bad) and is more of an asthetic issue...

    If you want to get rid of it, I'd like to hear more tank specs so I can advise -

    Water type/change schedule and amount
    Filtration system
    Substrate and cleaning sched.
    How much live rock?
    How many fish, inverts etc? Feeding schedule.

    Those would work for starters

    Let me know.
    Don't Panic Feel free to visit my blog -> Internet Tough Guy.

  5. #5
    Senior Member mickyfin's Avatar
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    But again, IMO opinion, its pretty common with new tanks to have algae outbreaks, however, the 'trate reading of 20 - 40 (PPM I assume) is probably related. Find the cause of nitrates and we may find the cause of algae.
    Don't Panic Feel free to visit my blog -> Internet Tough Guy.

  6. #6
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    It's 46gal, about 20lb. live rock, Remora C skimmer, AquaClear 901 powerhead (big and up top), Maxi 1200 powerhead (below on other end), and an AquaClear 500 which I think is not helping if not causing nitrates.
    I have a maroon clown, a firefish, a six line, and a new flame angel, also some snials, 3 hermits and an urchin (about 2"). I feed once a day.
    I've been doing 20% change every couple weeks for nitrates. Going to do one this weekend and take out the sponge and carbon from AquaClear 500, maybe take it out altogether. Also thinking about making it a refugium with live sand from Petco and some macro algae.
    I'm still very new at this.

  7. #7
    Senior Member mickyfin's Avatar
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    New or not you seem to have a pretty good handle on things.
    AquaClear may be causing nitrates if you're not changing the medium regularily...

    Everything else looks pretty good, unless you're overfeeding, which does not sound likely given the above I'm having a hard time nailing down the nitrate source.

    Crushed coral substrate by any chance? using tap water or RO/DI?

    A refuge with algae is a good step for any tank IMO.
    Don't Panic Feel free to visit my blog -> Internet Tough Guy.

  8. #8
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    I'm using tap but it tested very low for nitrates. Substrate, according to bag it came in is "Reef Sand".

  9. #9
    Senior Member mickyfin's Avatar
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    Understood nitrates are low in the tap water, but there may be other chemicals contributing to the algae growth.

    Curious to hear if your changes will impact the nitrates at all, do update me when you find out. I would also reccomend 20 more pounds of liverock for bio filtration.

    All things considered, if algae growth is minimal, throw in a few snails.

    But, if you want to eventually go reef, you'll probably want to get the Nitrates down.
    Don't Panic Feel free to visit my blog -> Internet Tough Guy.

  10. #10
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    Thanks

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