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post #1 of 22 (permalink) Old 05-05-2014, 03:55 PM Thread Starter
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why the green water

Hi guys,

on Saturday I did a 50% water change using "purified" water as the replacement, and eversince the water has had a greenish color/tint to it. My first thought is that this is algae, but I have 6 snails busily at work in the tank. my water numbers are


ph_________7.4
Ammonia___0.5
Nitrite______0.5
Nitrate______30

ideas?

Thanks, Todd
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post #2 of 22 (permalink) Old 05-05-2014, 04:05 PM
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Maybe a algae bloom if it is you wana black it out with bin bags or somethink to kill it of


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post #3 of 22 (permalink) Old 05-05-2014, 05:05 PM Thread Starter
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what are bin bags, and will they kill the plants, btw, the only livestock are snails
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post #4 of 22 (permalink) Old 05-05-2014, 05:24 PM
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Cool

If you still have measurable ammonia and nitrite then you are still cycling and algae (green water) is not that uncommon. Do more water changes, increase plant mass, and make sure you have correct fert levels. It should work itself out if you give the plants what they need to grow.
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post #5 of 22 (permalink) Old 05-05-2014, 05:33 PM Thread Starter
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Originally Posted by poormanisme View Post
If you still have measurable ammonia and nitrite then you are still cycling and algae (green water) is not that uncommon. Do more water changes, increase plant mass, and make sure you have correct fert levels. It should work itself out if you give the plants what they need to grow.


I also found a whole thread about it here:

https://www.plantedtank.net/forums/sh...d.php?t=609618

thanks again!
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post #6 of 22 (permalink) Old 05-05-2014, 05:34 PM
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Black rubbish bags anythink dark to stop light going into the tank but only if U have no live plants because they will die snails and fish would be fine without light for 2 days


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post #7 of 22 (permalink) Old 05-05-2014, 06:27 PM Thread Starter
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bummer! no black out, my tank is all about plants, so I don't want them to die!

I read I can reduce the reguar light and try a UV light (I already have one of those so I don't have to buy it).

I read I can also try daily water changes with Excel added after each change.

I also read that it might naturally go away....

Todd
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post #8 of 22 (permalink) Old 05-05-2014, 08:12 PM
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If you already have a UV light use that....it will kill it in a day or so. You can then do a big water change to remove the pollutants from all the dead algae.

If you try the blackout method you won't hurt your plants (they are fine for several days of darkness) but if you have a UV go with that since it is much easier then trying to bag up your whole tank (especially if you have an open top tank).

In my experience it rarely just goes away on its own. I think I have had it go away on its own once but every other time it just sticks around until I used my UV light on it.
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post #9 of 22 (permalink) Old 05-05-2014, 08:38 PM
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Wait- just to clarify, a UV LIGHT is very different from a UV STERILIZER.

UV sterilizers: http://www.drsfostersmith.com/fish-s...ps/c/3578/4393

UV bulb (usually used for keeping reptiles) http://www.drsfostersmith.com/produc...8&pcatid=15468





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post #10 of 22 (permalink) Old 05-05-2014, 08:42 PM
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Sorry I was talking about a UV Sterilizer....I misread his post. Thanks for catching that!
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post #11 of 22 (permalink) Old 05-05-2014, 08:56 PM
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A few day blackout will not kill your plants.
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post #12 of 22 (permalink) Old 05-05-2014, 10:56 PM Thread Starter
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so I have a turtle who will let me borrow his UV light for a few days, I could place it right over the filter outlet, will this help?

what about changing out the filter element, will that help?
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post #13 of 22 (permalink) Old 05-06-2014, 03:35 AM
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Sry though black out would kill plants as plants need light all I know about UV to clean water is my dad has a marine tank and has a box with UV init and the water god through the box and then gets filters im not 100% sure tho





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post #14 of 22 (permalink) Old 05-06-2014, 03:38 AM
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Originally Posted by tjurhs View Post
so I have a turtle who will let me borrow his UV light for a few days, I could place it right over the filter outlet, will this help?

what about changing out the filter element, will that help?
Just running a UV bulb won't do anything (not anything helpful, anyways).

Changing out the filters will help clean the filters so that they can catch some more algae. Won't make the GW go away though.





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post #15 of 22 (permalink) Old 05-06-2014, 03:59 AM Thread Starter
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So my plan to get rid of the GW is to:


1) significantly reduce the light

2) change out 25% of the water daily for idk how long...

3) after changing the water dose with Flourish Excel (so the plants can use the light that does come in, and I've read that algae doesn't like Excel?

4) stop the use of all other ferts, although there must be some that are ok to continue? please let me know if there are

5) after changing the water dose with API's ALGAEFIX (it says it won't harm fish or plants , and hopefully not snails)


I caught the GW early, so hopefully this will do the trick.

thanks guys for all your help in this, any other suggestions?

Todd
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