How to bring down NO3

[calvin f.h]

Hi I'm NO3 is very high80ppm any advice pls ? My tank is 5ft n just cycle nh3 n no 2 is ok pH 8 n KH at 10.

[JiaEn]

How are you exporting nutrients? 

Also, what do you keep and how are you feeding them? 

 

[calvin f.h]

Only 3 tang n feeding 2 time aday

[JiaEn]

How about nutrient export? 

And did u measure phosphate? 

[calvin f.h]

Sorry what is nutrient export? No I never buy phosphate test kit.

[JiaEn]

Do you do anything to bring down nutrients? 

Water change? Algae refugium?  Carbon dosing? 

 

I think you should monitor your phosphate as well. It's as important, if not more important, than nitrate. 

[calvin f.h]

Water change but only around 30% cos my is 1000L 

[calvin f.h]

But I test today still high. I change yesterday

[2coconutty]

Do you do anything to bring down nutrients? 
Water change? Algae refugium?  Carbon dosing? 
 
I think you should monitor your phosphate as well. It's as important, if not more important, than nitrate. 

+1

It be good to get a phosphate test kit. I consider a result between 0.03 to 0.1 okay.

Nutrient export methods are the ways nitrates and phosphates are "exported" from your tank.

The quickest way would be small weekly water changes of 10-15% but I recommend getting an algae scrubber too.

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[calvin f.h]

Ok thx so much for all Ur advice I will get 1 phosphate test kit

[calvin f.h]

Anymore thing I need to look out?

[calvin f.h]

I also think of start LSP what should I buy for the test kit?

[JiaEn]

You probably need calcium and magnesium test kits. 

[calvin f.h]

1 hour ago, JiaEn said:

Do you do anything to bring down nutrients? 

Water change? Algae refugium?  Carbon dosing? 

 

I think you should monitor your phosphate as well. It's as important, if not more important, than nitrate. 

I never use refugium n carbon dosing 

[calvin f.h]

Only media  chiller n skimmer in my sump

[calvin f.h]

Any brand API test kit ok mah

[Muw]

Dose a good bacteria source like micro bacter 7/ dr tims products/ aquaforest -no pro with pro bio s. Then turn skimmer to wet skimming. Change filter wool frequently. In weeks your tank will go to a national balance. Also if you do not have enough rocks or media to grow bacteria get those. Im using maxspect blocks.


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[calvin f.h]

Ok noted I'm using marine pure media also.hope my phosphate is low . Will test tonight.

[JiaEn]

If there isn't much export,  it's natural nitrate and phosphate will rise. 

How do you know there is good export?  From collecting a lot of dark skimmates,  or from algae growth in the refugium/scrubber

 

Dosing bacteria can speed up the process,  but ultimately,  the nutrients must leave your system somehow. 

[calvin f.h]

46 minutes ago, JiaEn said:

If there isn't much export,  it's natural nitrate and phosphate will rise. 

How do you know there is good export?  From collecting a lot of dark skimmates,  or from algae growth in the refugium/scrubber

 

Dosing bacteria can speed up the process,  but ultimately,  the nutrients must leave your system somehow. 

So if my phosphate is high isit means need to do more water change ?

[calvin f.h]

Sorry just started bk alot things need to learn.

[JiaEn]

44 minutes ago, calvin f.h said:

So if my phosphate is high isit means need to do more water change ?

It means if you were to only look at nitrate,  your phosphate will bring about a bigger problem 

[dtdream]

If both nitrates and phosphates are very high like yours seems to be, it’ll be good to do a bigger water change first. This will buy you some time to look into the other methods of nutrient export that JiaEn mentioned . 
 

And actually, a source of nitrates and  phosphates (among other things), is our tap water. It is much more preferable to use ro/di water if you are not already using. 
 

Good luck!

[darryl82]

So if my phosphate is high isit means need to do more water change ?

Weekly 15% WC change and bacteria dosing. That’s what I face after cycling. High Phosphate and nitrate, Very common after cycling. It took me 2 months to bring down. Next you are going to worried about diatom and algae issues.


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[calvin f.h]

On 7/20/2021 at 4:16 PM, dtdream said:

If both nitrates and phosphates are very high like yours seems to be, it’ll be good to do a bigger water change first. This will buy you some time to look into the other methods of nutrient export that JiaEn mentioned . 
 

And actually, a source of nitrates and  phosphates (among other things), is our tap water. It is much more preferable to use ro/di water if you are not already using. 
 

Good luck!

Thx so much