Flashing/Scratching

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Medic911

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May 3, 2015
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Please Help! my fish have been scratching on everything for the past 4 months! no signs of illness, just scratching! all of my test like ammonia, Nitrate, Nitrite, PH levels are all normal! they are in a 135G freshwater tank. Temp. is 73F. all fish are eating well and have no other problems besides scratching.
What could it be?!?!?!:help:
 

Rbishop

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Dec 30, 2005
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Mr. Normal
Specific levels from a good liquid test kit are needed.. what is normal for you may not be to others giving advice. What is the exact stocking and what is your maintenance routine?
 

Medic911

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May 3, 2015
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Ammonia is 0ppm, Nitrite is 0ppm, Nitrate is 0ppm.
I have 11 fish in my tank.
1 15" Common Pleco
3 rose minnows
1 Colombian shark
1 dwarf gouramie
1 clown loach
1 bala shark
1 10" banded leporinus
1 zebra angelfish
1 4" pink tail chalceus

I do a 30%-50% water change once a week and add tap water conditioner.
I also have a HUGE canister filter with bio and machanical filtration with UV built in and i clean that out once a month.
 

Rbishop

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Dec 30, 2005
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Nitrate 0 before or after a the weekly water change?
 

Medic911

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May 3, 2015
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I guess it's just a habit I got into. And no I don't have any plants in my tank yet just driftwood.
am I changing water to often?
 

Duckie

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Mar 14, 2015
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No, changing water too often is not too bad. I am just questioning the accuracy of your tests. What exact canister do you have and what media is in it? If you can keep your ammonia, nitrite, and nitrate all at 0 ppm that is perfect. Don't change anything.
 

Medic911

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May 3, 2015
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I have a sunsun HW-304b with UV and I have regular filter pads made for it and bio balls and marineland ceramic rings. I did have activated carbon but I recently took it out.
I also use the API freshwater master test kit and it all expires in 2018.
 

Duckie

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Mar 14, 2015
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Doesn't look like you got anything in your filter that will take out the nitrates. With the testkit (I have the same) it is hard telling when you are inbetween. On nitrates the first step is right to 5ppm. Even so, if it stays under 5 ppm even before the water change you are still doing everything very good. Only way to really tell if the nitrates change is to save a sample before water change and compare it to after against each other and see if they got different colors.
 
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