How do you lower nitrates when phosphates are 0??

[tebo]

Just as it sounds, my nitrates spiked to more than 10 ppm and my phosphates only increased from 0.02 to 0.04 It's been a week and the reduction of nitrates not been very significant, I recommend you, the only let down or what???

thanks

[tebo]

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[Garf]

What's been a week?

[Floyd R Turbo]

Usually it's the other way around

http://algaescrubber.net/forums/show...nitrates-are-0

...because of natural denitrification. If you have any N I would say look at the scrubber, something is not working right. Is this your waterfall or UAS?

[tebo]

Hi Garf
16ppm to 14 ppm in one week

Hi Floyd R turbo,
My mistake was feeding at one time about 30 ml of a preparation of shrimp, well it broke my device and it was a disaster

Then my phosphates did not rise much but my nitrates if

The ATS is well, well grown a little black algae on the sides




I do let him down alone, I worry about is the low proportion with respect to phosphate

[Floyd R Turbo]

Shrimp has one of the lower phosphate to protein ratios, according to the Randy Holmes-Farley article from a few months ago. I'm not sure if this would mean that less P and more N would enter the system and throw everything in that direction. That would seem to go against this running philosophy about the redfield ratio of N:P in food and in absorption of nutrients by algae.

I have long wondered if there is a connection between different food blends and the ratio of N and P and how this might affect long-term water chemistry and scrubber growth. I recently switched my DIY food recipe to include a much larger proportion of shrimp, as well as daphnia and rotifers. I wonder if that will lower the excess P inserted into the system...

[tebo]

Floyd greetings, I can not really vouch for anything scientific hehehe, but I came with stable values ​​of between 0.02 and 0.04 phosphates and nitrates between 1.1 and 3, after the disaster as if shot up nitrates and phosphates remained stable the mixture contained a higher proportion of shrimp than anything else

regards

[Floyd R Turbo]

So now you have high N and low P? I would keep feeding like normal and monitor it.

[tebo]

Hi floyd

yes, high N and low P

Well I will stay with the routine of feeding and monitor it the N

[Garf]

Tebo - is this problem affecting your display tank negatively ? I love pictures, have you got one of your tank ?