Tropical Fish Keeping - Aquarium fish care and resources

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-   -   Phosphate level (http://www.tropicalfishkeeping.com/beginner-planted-aquarium/phosphate-level-4947/)

scottysgirl 04-12-2007 01:07 AM

Phosphate level
 
What is a good level for phosphates for a planted tank. In my tank it is 1 ppm. Is this too high, too low?
Thanks

DeMonZ 04-12-2007 06:22 AM

I recently asked the same question on another board. I was told that phophates should be 1/10th of the nitrates. So, if you dose your tank to 20ppm nitrates, you should have 2ppm phosphates. This method has nearly irradicated algae in my tank. But you need to be diligent in testing and dosing. And you need to change your water weekly. 50% is what I was told.

scottysgirl 04-12-2007 06:41 PM

Alright, thank you very much

fish_4_all 04-12-2007 09:14 PM

That is pretty much the standard. 10:1 nitrates:phopshates. Anything close works well. I dose 10ppm nitrates and .88ppm phosphates and have never had a problem doing so 3 times a week.

Holly 04-13-2007 12:21 PM

Please expain dosing for Nitrates

jones57742 04-13-2007 01:01 PM

Typically no dosing is necessary for nitrates except in very, very heavily planted tanks with few fish.

The normal problem is keeping the nitrate levels low.

I try to keep my nitrate concentration at 20 or less (preferably below 15).

Nitrates are produced by the bacteriological digestion of nitrites.

No method of the reduction of nitrates via bacteriological digestion is commonly available to fish keepers.

The nitrates are only removed from the tank water via water changes or consumption by plants.

TR

fish_4_all 04-13-2007 01:23 PM

You can dose them with anything, it is actually nitrogen that you are dosing. Flourish nitrogen will do it but like Jones said, unless it heavily planted with good lighting you likely will not need to dose them.

I have 3.3 w/g over A 10 gallon and heavily planted is why I dose that high. My nitrates regularly bottomed out which caused BBA and Staghorn Algae.

Holly 04-16-2007 12:02 PM

Quote:

Originally Posted by jones57742

The normal problem is keeping the nitrate levels low.

That's why I was confused!

[/quote]I try to keep my nitrate concentration at 20 or less (preferably below 15).[/quote]

My nitrates normally sit at 5. Do I need to keep them higher for my planted tank? I just added more plants and put liquid fert in the tank Sat thinking it might bring my no4 up to fight the algea. Also what do you use to increase the no4? I looked to see if there was anything on the market but couldn't find anything. It was all to remove no4!

jones57742 04-16-2007 02:05 PM

Quote:

Originally Posted by Holly
My nitrates normally sit at 5. Do I need to keep them higher for my planted tank?

IMHO No. (I am assuming that you have fish in your tank). The probability of plant distress at this concentration is very, very minimal and you will probably have "all the nitrates you want before too long".

Quote:

Originally Posted by Holly
I just added more plants and put liquid fert in the tank Sat thinking it might bring my no4 up to fight the algea.

Holly:
All liquid fertilizers are not created equal and I am in the process of testing several.
I can currently only recommend Flourish by Seachem.

Quote:

Originally Posted by Holly
Also what do you use to increase the no4? I looked to see if there was anything on the market but couldn't find anything. It was all to remove no4!

I wouldn't do this one.

Although not documented to my knowledge IMHO fish are more sensitive to N than other elements in liquid fertilizers and I do not believe an instantaneous increase in nitrates would be beneficial to your fish.

Should decide to try increasing your nitrate concentration you should be able to find Potassium Nitrate (Salt Peter) at your local plant shop.


Two Additional Items

1) The nitrate ion is NO3 and the nitrite ion is NO2.

Nitrate Ion
http://www.fishforum.com/userpix/435_Nitrateion_2.jpg

Nitrite Ion
http://www.fishforum.com/userpix/435_Nitriteion_1.jpg
[/img]

By observation the nitrate ion is more stable than the nitrite ion (which is why compounds thereof are the favorites of our terrorists) and why nitrites are more toxic to fish.


2) Iron

Although not discussed frequently on the forum iron is very essential in the production of chlorophyll.

TR

Holly 04-16-2007 09:12 PM

Sorry I ment increasing my phosphates to fight algea? I've been pretty happy with my nitrites and nitrate levels in the past. They've been pretty consistant. I'm sticking with Flourish also. I normally only use the fert tabs but added some liquid since I bought a bunch of new plants this weekend.


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