0 phos 0 nit

riveclay-boaeef2024 · 01/27/2018, 10:03 AM

Would having 0 of those cause rtn or stn? And how do you guys get those numbers up to be detectable?

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Hentz · 01/27/2018, 12:46 PM

Could be. Especially with high Alk and Light Intensity. From personal experience my Acropora have done much worse when I ran an ULNS and I had high Alk/Light Intensity. I’ve found with lower nutrients it’s better to keep Alk at 7-7.5 and most Acropora in 200-250 PAR.
To get them higher and more detectable, you could feed more, add some more fish, or I have found using Polyp Booster helps color up Corals in a clean tank.

jda · 01/27/2018, 05:32 PM

They cannot get too low if you let the tank handle them on it's own - they can low on a test kit, but you will always have some since they cannot be used beyond equilibrium.

If you are using organic carbon, GFO, LC, AlOxide, etc, then you can certainly drive them too low and limit algae growth which will also be limiting the dinos in the coral.

My tank keeps mine at .1N and .005-.01P - this is close to natural seawater. I run halides with par from 350 to 600. Alk is around 7.1. Everything flourishes. If I took them maybe 5-10x lower, which is possible with media, then everything would suffer.

If you do not have a Hannah Ultra-Low Phosphorus Checker, then get one - it will show a reading. There is nothing that you can get to show nitrate beyond what a Salifert kit will show - but don't worry... you have some unless you are dosing organic carbon.

riveclay-boaeef2024 · 01/27/2018, 06:19 PM

I'm currently at 8.6 alk. I'm having some sps rtn maybe I need to lower my alk to where it originally started like 7.5. After I started nopox tank started going to crap

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DesertReefT4r · 01/27/2018, 08:03 PM

It was just few years ago when keeping no3 and po4 undetectable in a sps was considered almost a must and we strived to keep them as low as possible. Now we know why corals would lighten up so much in ulns tanks and keeps low but detecable no3 and po4 is now know to be critical to coral health. Feed more and add some more fish.

riveclay-boaeef2024 · 01/27/2018, 11:04 PM

I am feeding more and my phos did go up to .05 but nitrate still undetectable. My buddy swears by dosing nitrate. Your thoughts?

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kevin.st · 02/01/2018, 08:58 AM

Yes, some are dosing nitrates. I have just decided to use reef roids every day and that keeps some phos/nitrate detectable.

reefmutt · 02/02/2018, 05:27 PM

Have you stopped the nopox?

DesertReefT4r · 02/02/2018, 10:15 PM

Yep some dose no3 to maintain levels in systems that denitratify very well. Many use liquid aquatic plant no3 suppliment like Seachem Nitrogen.

riveclay-boaeef2024 · 02/03/2018, 09:14 PM

Quote:

Originally Posted by reefmutt

Have you stopped the nopox?

Yes I stopped nopox. That was the worst thing I ever did for my tank. I dosed some tree stump remover things seen happier now

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ramseynb · 02/03/2018, 10:32 PM

From my (limited) understanding, if you're going to run ULN, you need to be feeding and adding amino acids. Corals need no3 and po4 to grow. This is anecdotal, but I had success using a zeovit system and was running very low nutrient but I was also dosing amino acids and I tend to be a pretty heavy feeder.

riveclay-boaeef2024 · 02/03/2018, 10:43 PM

I started feeding more and started to dose acro power

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reefmutt · 02/04/2018, 09:22 AM

Nopox isn’t necessarily bad. It’s just bad when overdosed...
With more feeding and adding aspartic acid, you’ll have to keep an eye on nutrients again.
I suspect without the nopox completely and added nutrients n and p may rise...

dshel1217 · 02/07/2018, 07:45 AM

Ive had the same problem with GFO stripping away my Po4 stressing my sps out

riveclay-boaeef2024 · 02/18/2018, 01:31 PM

Quote:

Originally Posted by dshel1217

Ive had the same problem with GFO stripping away my Po4 stressing my sps out

What did you do to remedy

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01/27/2018, 10:03 AM	#1
riveclay-boaeef2024 Registered Member Join Date: Mar 2016 Posts: 492	0 phos 0 nit Would having 0 of those cause rtn or stn? And how do you guys get those numbers up to be detectable? Sent from my SAMSUNG-SM-G935A using Tapatalk

01/27/2018, 12:46 PM	#2
Hentz Registered Member Join Date: Feb 2013 Location: Las Vegas, Nevada Posts: 2,016	Could be. Especially with high Alk and Light Intensity. From personal experience my Acropora have done much worse when I ran an ULNS and I had high Alk/Light Intensity. I’ve found with lower nutrients it’s better to keep Alk at 7-7.5 and most Acropora in 200-250 PAR. To get them higher and more detectable, you could feed more, add some more fish, or I have found using Polyp Booster helps color up Corals in a clean tank. __________________ A Reef in the Desert: 120 Gallon (4x2x2) - MP40 x2 - Gyre 130 - ATI Sunpower - Simplicity Pump/Skimmer - Controlled by Apex

01/27/2018, 08:03 PM	#5
DesertReefT4r Registered Member Join Date: Sep 2015 Location: Mesa Az Posts: 771	It was just few years ago when keeping no3 and po4 undetectable in a sps was considered almost a must and we strived to keep them as low as possible. Now we know why corals would lighten up so much in ulns tanks and keeps low but detecable no3 and po4 is now know to be critical to coral health. Feed more and add some more fish. __________________ Tank history 29g tropical ,55g cichlid tank, 20H softy reef, 29g mixed reef, 20H brackish goby & puffer tank, 55g mixed reef, 6g Nanocube softy lps reef, 40B sps reef, 75g sps reef, 75g sps reef in bu Current Tank Info: 75g sps reef build in the works.

02/02/2018, 05:27 PM	#8
reefmutt Registered Member Join Date: Apr 2003 Location: Mtl. Canada Posts: 7,824	Have you stopped the nopox? __________________ Matt. Current Tank Info: 53x32.5x26 190g dt 60g of sumps 3 tank-100 gal frag system 6xAI prime 8xt5. 4x maxspect gyre. Skimz Dual internal sicce pump skimmer Deltec PF601s ca rx+Kalk stirrer

02/02/2018, 10:15 PM	#9
DesertReefT4r Registered Member Join Date: Sep 2015 Location: Mesa Az Posts: 771	Yep some dose no3 to maintain levels in systems that denitratify very well. Many use liquid aquatic plant no3 suppliment like Seachem Nitrogen. __________________ Tank history 29g tropical ,55g cichlid tank, 20H softy reef, 29g mixed reef, 20H brackish goby & puffer tank, 55g mixed reef, 6g Nanocube softy lps reef, 40B sps reef, 75g sps reef, 75g sps reef in bu Current Tank Info: 75g sps reef build in the works.

01/27/2018, 05:32 PM	#3
jda Dogmatic Dinosaur Join Date: Feb 2004 Location: Boulder, CO Posts: 6,256	They cannot get too low if you let the tank handle them on it's own - they can low on a test kit, but you will always have some since they cannot be used beyond equilibrium. If you are using organic carbon, GFO, LC, AlOxide, etc, then you can certainly drive them too low and limit algae growth which will also be limiting the dinos in the coral. My tank keeps mine at .1N and .005-.01P - this is close to natural seawater. I run halides with par from 350 to 600. Alk is around 7.1. Everything flourishes. If I took them maybe 5-10x lower, which is possible with media, then everything would suffer. If you do not have a Hannah Ultra-Low Phosphorus Checker, then get one - it will show a reading. There is nothing that you can get to show nitrate beyond what a Salifert kit will show - but don't worry... you have some unless you are dosing organic carbon.

01/27/2018, 06:19 PM	#4
riveclay-boaeef2024 Registered Member Join Date: Mar 2016 Posts: 492	I'm currently at 8.6 alk. I'm having some sps rtn maybe I need to lower my alk to where it originally started like 7.5. After I started nopox tank started going to crap Sent from my SAMSUNG-SM-G935A using Tapatalk

01/27/2018, 11:04 PM	#6
riveclay-boaeef2024 Registered Member Join Date: Mar 2016 Posts: 492	I am feeding more and my phos did go up to .05 but nitrate still undetectable. My buddy swears by dosing nitrate. Your thoughts? Sent from my SAMSUNG-SM-G935A using Tapatalk

02/01/2018, 08:58 AM	#7
kevin.st Registered Member Join Date: Apr 2015 Location: SLC, UT Posts: 151	Yes, some are dosing nitrates. I have just decided to use reef roids every day and that keeps some phos/nitrate detectable.

02/03/2018, 10:32 PM	#11
ramseynb Registered Member Join Date: Nov 2010 Location: New Braunfels, TX Posts: 630	From my (limited) understanding, if you're going to run ULN, you need to be feeding and adding amino acids. Corals need no3 and po4 to grow. This is anecdotal, but I had success using a zeovit system and was running very low nutrient but I was also dosing amino acids and I tend to be a pretty heavy feeder.

02/03/2018, 10:43 PM	#12
riveclay-boaeef2024 Registered Member Join Date: Mar 2016 Posts: 492	I started feeding more and started to dose acro power Sent from my SAMSUNG-SM-G935A using Tapatalk

02/04/2018, 09:22 AM	#13
reefmutt Registered Member Join Date: Apr 2003 Location: Mtl. Canada Posts: 7,824	Nopox isn’t necessarily bad. It’s just bad when overdosed... With more feeding and adding aspartic acid, you’ll have to keep an eye on nutrients again. I suspect without the nopox completely and added nutrients n and p may rise... __________________ Matt. Current Tank Info: 53x32.5x26 190g dt 60g of sumps 3 tank-100 gal frag system 6xAI prime 8xt5. 4x maxspect gyre. Skimz Dual internal sicce pump skimmer Deltec PF601s ca rx+Kalk stirrer

02/07/2018, 07:45 AM	#14
dshel1217 Registered Member Join Date: Apr 2017 Posts: 12	Ive had the same problem with GFO stripping away my Po4 stressing my sps out