Green Water

micha447 · 04-20-2005, 02:07 PM

Hello everyone
I am having a horrible time with my fish tank. I have had it for a year now and have had no problems. I did a complete clean about 2 months ago and changed the rocks in my 20 gal tank and ever since then i have had a problem with my water turning green. So on Sunday I did a complete water change but instead of using my water I went to my mom's and used her water (which is town water, mine was well water). I am noticing that the water is starting to turn green again. Its not algea on the glass or anything its the actual water turning green. I took a sample of my water to the fish store and they said that it seemed ok. They told me that light could be causing my water to turn green. So i keep the blinds shut completely now by the tank and i keep the light off a lot more (maybe only on for 2 hours a night now). I cannot figure this out. Is it hurting my fish?
Thanks a million
Michelle

Damon · 04-20-2005, 03:53 PM

Greenwater is usually caused by an excess of waste/food in the aquarium combined with sunlight. A blackout for 3-4 days after a 40% waterchange should help out a lot.

PigMonkeyFish · 04-20-2005, 04:23 PM

Hello
Greenwater/Single cell algae is quite often the build up of dissolved organic matter as Simpte said.
Do you have any plants in the tank? Plants will use up the excessive nutiants that are currently fueling the algae. Make sure your tank is not in direct sunlight either.
Hope this info helps micha447

micha447 · 04-21-2005, 04:38 AM

Thanks for the help
But the thing i don't understand is that I have had the fish tank for a year in the same spot so I don't see how it could be sunlight. The only thing that I have changed is the rocks and their food. Do you think that the food has somethng to do with it? I have done a 100% water change and i notice it still turning green.

Thanks
Michelle

Damon · 04-21-2005, 07:13 AM

Waterchanges alone won't fix the problem. Cut back on feedings. Reduce light or try a 3 day blackout removing all light from the tank.

PigMonkeyFish · 04-21-2005, 01:21 PM

You say you only recently filled your tank from a different water source. Maybe this is the root of the problem. some tap water contains high levels of nitrates and phosphates which encouarge algae growth

04-20-2005, 02:07 PM	#1
micha447 Junior Member Join Date: Apr 2005 Posts: 5	Green Water Hello everyone I am having a horrible time with my fish tank. I have had it for a year now and have had no problems. I did a complete clean about 2 months ago and changed the rocks in my 20 gal tank and ever since then i have had a problem with my water turning green. So on Sunday I did a complete water change but instead of using my water I went to my mom's and used her water (which is town water, mine was well water). I am noticing that the water is starting to turn green again. Its not algea on the glass or anything its the actual water turning green. I took a sample of my water to the fish store and they said that it seemed ok. They told me that light could be causing my water to turn green. So i keep the blinds shut completely now by the tank and i keep the light off a lot more (maybe only on for 2 hours a night now). I cannot figure this out. Is it hurting my fish? Thanks a million Michelle

04-20-2005, 03:53 PM	#2
Damon Aquatic Naturalist Join Date: Jan 2005 Location: Dayton, Ohio Age: 32 Posts: 14,971	Re: Green Water Greenwater is usually caused by an excess of waste/food in the aquarium combined with sunlight. A blackout for 3-4 days after a 40% waterchange should help out a lot. __________________ For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow. Member of the AGA (Aquatic Gardner's Association) Member of the IBC (International Betta Congress)

04-20-2005, 04:23 PM	#3
PigMonkeyFish Fishy Member Join Date: Apr 2005 Posts: 27	Re: Green Water Hello Greenwater/Single cell algae is quite often the build up of dissolved organic matter as Simpte said. Do you have any plants in the tank? Plants will use up the excessive nutiants that are currently fueling the algae. Make sure your tank is not in direct sunlight either. Hope this info helps micha447

04-21-2005, 04:38 AM	#4
micha447 Junior Member Join Date: Apr 2005 Posts: 5	Re: Green Water Thanks for the help But the thing i don't understand is that I have had the fish tank for a year in the same spot so I don't see how it could be sunlight. The only thing that I have changed is the rocks and their food. Do you think that the food has somethng to do with it? I have done a 100% water change and i notice it still turning green. Thanks Michelle

04-21-2005, 07:13 AM	#5
Damon Aquatic Naturalist Join Date: Jan 2005 Location: Dayton, Ohio Age: 32 Posts: 14,971	Re: Green Water Waterchanges alone won't fix the problem. Cut back on feedings. Reduce light or try a 3 day blackout removing all light from the tank. __________________ For in much wisdom [is] much grief: and he that increaseth knowledge increaseth sorrow. Member of the AGA (Aquatic Gardner's Association) Member of the IBC (International Betta Congress)

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04-21-2005, 01:21 PM	#6
PigMonkeyFish Fishy Member Join Date: Apr 2005 Posts: 27	Re: Green Water You say you only recently filled your tank from a different water source. Maybe this is the root of the problem. some tap water contains high levels of nitrates and phosphates which encouarge algae growth

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