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 Outrageous Phosphate Levels

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bighildy53
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PostSubject: Outrageous Phosphate Levels   Mon Apr 11, 2016 8:16 pm

I have a severe phosphate problem.  Until recently, this calendar year, I hadn’t paid attention to phosphate levels.  Since January my phosphate level has been off the chart for any test I used.  I’ve measured my tap water several times to verify that the tests weren’t defective.  My tap water is about 1.00ppm.  My other numbers are good (GH 5, KH 7, ammonia 0, nitrite 0, nitrates between 20-40).  I’ve done two major (35%) water changes two days in a row; weekly about 20%.  When testing on the third day I had to dilute the aquarium water with RO/DI water and use a Hanna phosphate high range colorimeter to calculate an amount of 59.7ppm.  

I have a minor amount of algae in my Anubis leaves and some sporadic brown algae.  But no algae problem.  Nothing on the glass.  

I’ve been trying to treat with various phosphate removers.  In my FX6 canister filter and a BRS media reactor.

I can’t imagine what would be producing so much phosphate.

Any ideas?

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Combination of Fluval and Seachem Media
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Liz
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PostSubject: Re: Outrageous Phosphate Levels   Mon Apr 11, 2016 11:00 pm

The usual suspect is fish food.

I would also repeat test the tap water, because I too am a Glen Allen resident and have measured scary levels out of the tap, but it varies greatly.

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gerald
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PostSubject: Re: Outrageous Phosphate Levels   Tue Apr 12, 2016 12:22 pm

If there's no algae problem and your plants are doing well, don't worry about it -- your N to P ratio is apparently OK.  Some water supply companies add phosphate to reduce pipe corrosion.  Not sure if you saw my previous post where I'd tried using hollow beef bones as spawning caves for gobies.  Blue-green slime algae (cyanobacteria) LOVED it! ... phosphate galore.
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Liz
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PostSubject: Re: Outrageous Phosphate Levels   Tue Apr 12, 2016 12:27 pm

Good advice by Gerald - treat the tank, not the test kit, lol.

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JohnnyAMH
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PostSubject: Re: Outrageous Phosphate Levels   Thu Apr 14, 2016 9:46 pm

@gerald wrote:
If there's no algae problem and your plants are doing well, don't worry about it -- your N to P ratio is apparently OK.  Some water supply companies add phosphate to reduce pipe corrosion.  Not sure if you saw my previous post where I'd tried using hollow beef bones as spawning caves for gobies.  Blue-green slime algae (cyanobacteria) LOVED it! ... phosphate galore.

I have to agree. There are ways to lower phosphate but not worth the bother unless there is a serious problem... shrug

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bighildy53
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PostSubject: Re: Outrageous Phosphate Levels   Sun May 29, 2016 9:51 pm

With help I realized I was incorrectly using Seachem Neutral regulator. I was over dosing when adding it to RO/DI water. I now use Alkaline and Acid regulator to achieve my KH and PH targets; and I'm much more careful with the measurements. This combined with a series of frequent water changes has my numbers much better. And noticeable reduction in algae on the plants; which is partial due to the snails which have been added.
Ammonia: 0
Nitrite: 0
Nitrate: 3
Phosphate: .2
KH: 8
GH: 9

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75g Freshwater Planted
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2 Boesemani Rainbow
2 Pair Albino Rainbow
2 Red Rainbow
3 Peacox Rainbow
4 Rainbow "Sharks"
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2 Common Plecos
1 Fluval FX6 Canister Filter
1 Trigger Systems Emerald 34 Sump
Combination of Fluval and Seachem Media
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JohnnyAMH
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PostSubject: Re: Outrageous Phosphate Levels   Mon May 30, 2016 1:01 pm

I'm so happy you found a solution... Cool

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     ~~~ My Aquariums ~~~
55 gal. Planted Community Show Tank
(Swordtails, Neons, Kuhlii Loaches and Bristled Nose Plecos)
30 gal. Bare Bottom Adult Angelfish Tank
20 gal. Bare Bottom Angelfish Breeder Tank
10 gal. Bare Bottom  Angelfish Fry Tank
10 gal. Planted Show Tank
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