green water, need some help - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 08-17-2010, 03:15 PM Thread Starter
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green water, need some help

Ok so i have a 135g, and i just received my 4' t5 2 bulb fixture, well its been running about 2 hours, and i can already see a difference in the water, its turning green. What is my best option on getting rid of it? Uv sterilizer? The light sits about 3" above the tank, and i really can't go much higher. Any help would be great thanks
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post #2 of 12 (permalink) Old 08-17-2010, 03:19 PM
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Water change to remove nutrients, Co2/Flourish/metricide, Dark tank for a few days.
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post #3 of 12 (permalink) Old 08-17-2010, 03:35 PM
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UV sterilizer would be the quickest, easiest way.

Cheapest way to go is a 3 day blackout (it might come back) or just do nothing and wait it out (tends to take 6-8 weeks but IME never comes back).

I always do the very unpopular waiting it out. Has never failed me yet, just takes patience.

IME GW is pretty common with new tank setups, or if you do a major rescape without doing a big water change after you're done.





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post #4 of 12 (permalink) Old 08-17-2010, 03:48 PM Thread Starter
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i don't exactly want to do a blackout because i am trying to get the plants back healthy. I've tried the 3 day black out before on a different tank and no difference. I just did a water change 2 days ago of about 40% (i do this every week), and the tank have been running about a month and has fish in it. i do excel every other day. Its not a heavily planted tank, so i don't exactly want to do a co2.
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post #5 of 12 (permalink) Old 08-17-2010, 03:53 PM
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If you're opting for the "wait it out" method you need to reduce if not eliminate the water changes. This helps the algae run out of nutrients a little more quickly.

Once you notice the algae has started to clear a little bit, then you do a big water change, and a day or so after that the tank should be crystal clear again.

This method has worked for me on all my tanks- from my 90gal to my little 10gal (which I just got cleared up last week, ironically enough...)





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post #6 of 12 (permalink) Old 08-17-2010, 04:00 PM Thread Starter
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ya i guess uv sterilizer is my best option. I can't really wait 6-8 weeks to do a water change since i have a lot of fish in it.
would it be better to have the uv sterilizer going in the tank, or in the sump?
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post #7 of 12 (permalink) Old 08-17-2010, 04:52 PM
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I bought a 9W in tank one for 39$ at a local pet retail storem. Hooked it up, with a frysaver on my filter inlet, and let it run for a week. It was funny to watch, the outlet of the sterlizer wad a white cloud of nuked algae.
Cleaned the prefilter daily of the "algae dust" and I was set, no more outbreaks. I have not had to use it again, but it came about when I changed my substrate from clown puke to Turface.
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post #8 of 12 (permalink) Old 08-17-2010, 05:12 PM
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This happened to my new 50 gallon awhile after I set it up. I left the lights on for shorter periods but besides that I did water changes every other week like usual. It gradually faded away and hasn't come back since. I wouldn't do anything drastic green water isn't a big deal. Infact a lot of people raise fry in green water.
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post #9 of 12 (permalink) Old 08-17-2010, 05:17 PM Thread Starter
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That's funny and pretty cool, is that the green killing machine.
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post #10 of 12 (permalink) Old 08-17-2010, 06:32 PM
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I put on a new light in and green water bloomed within the day! I found some window screen and put it over the tank for a week and the plants out competed the GW and adjusted to the new lighting by the time I did the next water change.
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post #11 of 12 (permalink) Old 08-18-2010, 12:12 PM Thread Starter
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well the water didn't get any green yesterday, but i was able to hang my light about 6" above the tank.
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post #12 of 12 (permalink) Old 08-18-2010, 12:44 PM
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Quote:
Originally Posted by lauraleellbp View Post
... or just do nothing and wait it out (tends to take 6-8 weeks but IME never comes back).

I always do the very unpopular waiting it out. Has never failed me yet, just takes patience.
Thought I was the only one that ever did this. Most methods are like cold medication. If you get a cold, get lots of rest, lots of fluids and take cold medication you'll be better in 3 or 4 days. If you get a cold, get lots of rest, lots of fluids and no medication you'll be better in about half a week.

Dave

Wishing I had a pithy quote
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