Water Change - Algea Bloom - The Planted Tank Forum
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post #1 of 20 (permalink) Old 01-29-2010, 02:27 AM Thread Starter
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Water Change - Algea Bloom

Hello All,

"Quick question"...

Has anyone found 50% water changes every 2-3 day safe when getting rid of algae blooms? Meaning just a few days... Once or twice. Like 3 in a week.

Thanks,

Clint

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post #2 of 20 (permalink) Old 01-29-2010, 07:20 AM
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I myself would probably only do one large water change. unless the tank is fishless. Otherwise if you have fish, that can become too stressful having to adjust to temperature and pH etc all over again.

If you have fish, cut down on how much you feed, that will help out alot.

Is the tank new?
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post #3 of 20 (permalink) Old 01-29-2010, 12:58 PM Thread Starter
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3 months old so yeah, pretty new. I had an algae waffer or two get missed my the otos and plecos and it seemed like that caused the spike and then bloom. Not many fish in the tank. 5 otos, 5 rainbows, 2 plecos, 5 pygmy corys and a few amano shrimp. All in a 75

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post #4 of 20 (permalink) Old 01-29-2010, 01:26 PM
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I would do 1 large water change. Remove 20 gallons of water and all will be good.
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post #5 of 20 (permalink) Old 01-29-2010, 01:42 PM
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I also do only large water changes
let the tank settle for several months

How do you know it is an algae bloom?
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post #6 of 20 (permalink) Old 01-29-2010, 03:01 PM
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^^^^ I was also thinking possibly bacteria bloom from the left over food.
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post #7 of 20 (permalink) Old 01-29-2010, 08:42 PM Thread Starter
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I can only assume algae since the water first got cloudy after the wafers dissolved and then turned green. I guess what you guys are suggesting could be true too. I didn't know a bacteria bloom could be green.

I just finished a 50% WC and the water actually looks great now. I will also cut back on the feeding.... Still waiting for my ferts so I am only adding FlorinMulti and Florin-K...

Clint

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post #8 of 20 (permalink) Old 01-29-2010, 08:51 PM
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^ how often ya feeding?
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post #9 of 20 (permalink) Old 01-29-2010, 08:56 PM
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Quote:
Originally Posted by Dempsey View Post
I can only assume algae since the water first got cloudy after the wafers dissolved and then turned green. I guess what you guys are suggesting could be true too. I didn't know a bacteria bloom could be green.

I just finished a 50% WC and the water actually looks great now. I will also cut back on the feeding.... Still waiting for my ferts so I am only adding FlorinMulti and Florin-K...
WC don't usually get rid of GW. If it is GW, then more than likely your water will be cloudy within a few days again.
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post #10 of 20 (permalink) Old 01-29-2010, 08:57 PM
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try running a 100micron filter pad in whatever filter you are using... that will def help...
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post #11 of 20 (permalink) Old 01-29-2010, 09:27 PM Thread Starter
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Hmmm..... I knew I needed to add more media to my XP3. I also cut the lights back a bit. GW comes from ammonia spikes also, right?

Clint

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post #12 of 20 (permalink) Old 01-29-2010, 09:28 PM Thread Starter
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I am feeding twice a day.... Not much though. Those wafers sure helped, I'm sure.

Clint

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post #13 of 20 (permalink) Old 01-29-2010, 09:31 PM
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it can also come from a phosphate spike
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post #14 of 20 (permalink) Old 01-29-2010, 10:55 PM
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Bacteria bloom is grey or white, not green.
Green water algae is green, though it can look grey or yellow when it is just getting started.

In a case where you know there was a temporary increase in fertilizer (decomposing food) then a water change that removes the uneaten food might be all that is needed, perhaps one more a day later just to be sure.

It is OK to do large water changes if the GH, KH and temperature are matched. I test the TDS, too. Fish can handle changes in pH pretty well. It is drops in TDS that cause problems.
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post #15 of 20 (permalink) Old 01-31-2010, 01:07 PM Thread Starter
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Quote:
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Bacteria bloom is grey or white, not green.
Green water algae is green, though it can look grey or yellow when it is just getting started.

In a case where you know there was a temporary increase in fertilizer (decomposing food) then a water change that removes the uneaten food might be all that is needed, perhaps one more a day later just to be sure.

It is OK to do large water changes if the GH, KH and temperature are matched. I test the TDS, too. Fish can handle changes in pH pretty well. It is drops in TDS that cause problems.
Thank you, that's what I thought. I don't do anything to my tap water besides adding stress coat. Everything matches up very well. Do we think that the large WCs will mess up the cycle process if it's still going on?

Thank you all for the replies!

Clint

“Presents are the best way to show someone how much you care. It is like this tangible thing that you can point to and say, ‘Hey man, I love you this many dollars-worth.’” -Michael Scott


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