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Late measurements NO3

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NO2

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PO4

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Will rise DOC with 2,4 ml to 18 ml/day

Sincerely Lasse
 
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Orphek OR3 reef aquarium LED bar
Lasse said:
I visit my old workplace today - here is how it looks like nowadays. You can play it in 4K


Sincerely Lasse
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Lasse, it's shameful nobody told them that you can't keep more than one Chromis together like that. They will just harass each other until there is only one left. ;-)
 
taricha said:
Lasse, it's shameful nobody told them that you can't keep more than one Chromis together like that. They will just harass each other until there is only one left. ;-)
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Ha ha - and do not mention the sharks:)

Sincerely Lasse
 
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Tidal Gardens
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Deltec
I have done some preliminary calculations (between the index finger and the thumb) on my measurements. Since first of July - NO3 concentration has decrease with 14.3 mg/L - the PO4 concentrations seems to have decrease with around 0.16 mg/L during the same time. In molar ratio - its around 140:1 This means that growth can probably stand for between 7 to 15 % of the NO3 decrease. It means that up to 85% of the NO3 decrease must been caused by other mechanisms than growth.

Sincerely Lasse
 
Lasse said:
I have done some preliminary calculations (between the index finger and the thumb) on my measurements. Since first of July - NO3 concentration has decrease with 14.3 mg/L - the PO4 concentrations seems to have decrease with around 0.16 mg/L during the same time. In molar ratio - its around 140:1 This means that growth can probably stand for between 7 to 15 % of the NO3 decrease. It means that up to 85% of the NO3 decrease must been caused by other mechanisms than growth.

Sincerely Lasse
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But there are so many variables concerning PO4 to make such a general conclusions and calculations - you are running GFO, there is definitely some phosphate poll in the sand and rocks., etc. But it is very interesting experiment I would say.
 
biom said:
ut there are so many variables concerning PO4 to make such a general conclusions and calculations - you are running GFO, there is definitely some phosphate poll in the sand and rocks
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Yes I´m aware of this but the experiment is over time and the only known change (compared with first of July) is the DOC dose. Its also this way that I do not trust my Hanna Checker 100% (not even 50% :)) but its a serie that will continue. I have also used unfiltered samples. It can happens that redo the test run later on and see if PO4 will rise back to around 0.36 mg/L again. But there is a lot of different parameters included but I get a rather low percentage - even if I had got 50/50 - it still indicate other factors involved than growth

Sincerely Lasse
 
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Yesterday - I introduce my new Sailfins into the display tank. one of them slipped out a few days ago and is hiding far back in the aquarium. I can see it - but impossible to photograph. The other I lifted down with seashells and everything - could choose the location - here is some photos and a video

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Sincerely Lasse
 
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