High phosphates low nitrates

Krissreef

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Who's got that problem?

Today I tested 1 nitrate and 0.12 phosphates... its a 120 gallon mixed reef. I run a refugium (approximately 7gal) for 11 hours and its about 90% full at all times, I dont harvest a much. I run kessil 160 grow light on it. I have a omega 180i skimmer which collects around inch to inch and a half skimmate a week. No filter socks or filter floss. For about 2 weeks now i have been using brightwell purit, but that should be helping or harming my nutrient problem.

I have used rowaphos to lower the phosphates and maintain some nitrate before, it worked well. For a month or so i dosed nitrates, no rowaphos, nitrates leveled up well, 5 and 0.08, but i started seeing dino looking stuff on my acros. Not sure if it was primarily from the nitrates dosage, overdose of aminos or phyto. Either way i stopped dosing all together. I will start dosing aminos but very slow, starting today. Either way its been almost 2 weeks since i stopped dosing nitrates, the tank is doing better but today i tested 1 nitrate and 0.12 phosphates. I feed very small amount of pellets (like 10-15 pellets) once a day, and i feed 2-3 cubes of frozen once a day as well. One of those cubes is the sparelina one, which i feed that only once every other day. I also add 7 drops of coral vitilizer from kz every day. I have used that food on many tanks and i know it does not add much nutrients.

In conclusion i just added back my rowaphos reactor to batter the high phosphates.

Who else has this kind of problem and how are u doing with or? Or how have u permanently fixed it?

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How do your coral look? Do you have major algae problems? I generally use those as my indicators that I need to change something. If things are growing well I use test results to look for consistency from week to week, but don't chase specific numbers.
 
I use Tropic Marin Elimi NP. I run a calcium reactor, so my PO4 runs higher. For me, it's about ratios rather than numbers and yours seems okay (10:1 : p), if you use gfo, then slowly bring down PO4. Also, if you remove a good portion of chaeto, this allows more to grow rapidly and better reduce nutrients. I really like the Tropic marin carbon dosing, as it targets certain phosphates levels.
 
I have tried that but i have noticed the fish are much healthier when i feed pellets. I have 4 tangs which two of them almost 5 inches. They get skinny with only feeding frozen. I dont feed any nory.

Try cutting the pellets out and relying more on the frozen food. Depending on the pellets they might be high in phosphates
 
I use Tropic Marin Elimi NP. I run a calcium reactor, so my PO4 runs higher. For me, it's about ratios rather than numbers and yours seems okay (10:1 :p), if you use gfo, then slowly bring down PO4. Also, if you remove a good portion of chaeto, this allows more to grow rapidly and better reduce nutrients. I really like the Tropic marin carbon dosing, as it targets certain phosphates levels.
I'm not sure why it inserted an emoji there, but it should be N : P
 
yeah, .12 is not really all that bad. I would not run rowaphos.

If anything, Id dose nitrates
 
I have very little hair algae, nothing serious. Coralw are covering frlm the small crash and some have stned due to the high phosphates. Hopefully the rowaphos will help and they will bounce back.

How do your coral look? Do you have major algae problems? I generally use those as my indicators that I need to change something. If things are growing well I use test results to look for consistency from week to week, but don't chase specific numbers.

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U are right about the ratio. I added 6 tablespoons of rowaphos which is not much. And I understand i dan harvest the cheati but it doesn't grow very well. It does an amazing job sucking up nitrates thou lol

I use Tropic Marin Elimi NP. I run a calcium reactor, so my PO4 runs higher. For me, it's about ratios rather than numbers and yours seems okay (10:1 : p), if you use gfo, then slowly bring down PO4. Also, if you remove a good portion of chaeto, this allows more to grow rapidly and better reduce nutrients. I really like the Tropic marin carbon dosing, as it targets certain phosphates levels.
 
I have tried that but i have noticed the fish are much healthier when i feed pellets. I have 4 tangs which two of them almost 5 inches. They get skinny with only feeding frozen. I dont feed any nory.
What kind of frozen food is it? You could try switching it up, add some pods packed with spirulina, or some ROE, instead of the pellets.
 
Lol, I have that problem. My phosphate was 10+ with nitrates in the 10 -20 range. Got a phosphate test kit and found out our water has high phosphate. I also found out that my sister in law is using chemicals near the tank. Got phosguard and it's down to 1-2 .
Fish were never affected, but the invertebrates pretty much all died off and pita algae has taken over.

So now I have to get everything back to correct parameters.
I feed flake, frozen grated human shrimp for the pinnatus batfish and newly hatched brine shrimp for the mandrins.
 
I have thought about that but i feed a lot so i get whats the chipset in my lfs. I might try PE but i know from previous experience the skimmer goest nuts when i feed that.


What kind of frozen food is it? You could try switching it up, add some pods packed with spirulina, or some ROE, instead of the pellets.
 
Ouch...

Lol, I have that problem. My phosphate was 10+ with nitrates in the 10 -20 range. Got a phosphate test kit and found out our water has high phosphate. I also found out that my sister in law is using chemicals near the tank. Got phosguard and it's down to 1-2 .
Fish were never affected, but the invertebrates pretty much all died of and pita algae has taken over.

So now I have to get everything back to correct parameters.
 
Dinos can start when your nutrients get out of balance. For me it's when nitrates bottom out, and less dependent on my phosphate level. Typically .12ppm is not terrible, but is high. If you can get the phosphates below .1 then that should be at a stable point. Nitrates at a minimum of 5ppm is at a good level, and don't want them getting too out of control. I use lanthanum chloride to control phosphates without affecting nitrates.
 
My goal is 1 nitrate 0.07 phosphates. I have a small algae turn scrubber that i am debating if i should use that and use the refuge section as a frag section. Since its not doing what i need it to do...

Dinos can start when your nutrients get out of balance. For me it's when nitrates bottom out, and less dependent on my phosphate level. Typically .12ppm is not terrible, but is high. If you can get the phosphates below .1 then that should be at a stable point. Nitrates at a minimum of 5ppm is at a good level, and don't want them getting too out of control. I use lanthanum chloride to control phosphates without affecting nitrates.
 

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