Can a abrupt stop in vsv dosing induce a po4 spike?

[Patx]

It seems very obvious but I still ask the question. (Doubt)
For about 1 month I gradually started dosing the VSV mix.
I was down to 4.5ml /55gallons.
my No3 goal was achieved so I decided to gradually reduce the dose to reach equilibrium.

I had planned to try 3.5ml for 2 days...then 2.5ml and check etc...

But i forgot the 2.5ml dose and also to turn my skimmer back on after a water change.

I also dose KH2PO4 for +0.03ppm/day. (this is relatively my usual consumption) and 0.6ml of BB.
It's a bit out of control as a result lol.

I think I'll start again this evening with VSV 3ml and stop
the +0.03 po4 for a day or 2... ☆★☆

-But why did the PO4 rise so quickly (dead bacteria?)
-I expected to see a peak in the nitrates, but why in the po4 ?

Tank look ok, skimmer nothing special. (As if nothing happen)

Thk !

 

[Randy Holmes-Farley]

Every value in your table is fine. Yes, reducing organic additions may allow increase in N and P, but I would not assume it's any great spike, and it won't be on P more than N.

Don't get too worried about small changes.

 

[Patx]

Every value in your table is fine. Yes, reducing organic additions may allow increase in N and P, but I would not assume it's any great spike, and it won't be on P more than N.

Don't get too worried about small changes.

yes, I admit that with the scale of the po4 graph it seems more impressive!

Thank you !

 

[Patx]

Dang, that was fast !
So i dose the 3,5ml VSV last night.
And i didn't dose the +0.03 po4.
This morning po4 are back at 0.01...
Po4 : 0.09 to 0.01 in a blink of a eye!
although if I had dosed my "po4 mix" i would be at +0.03....
So around 0.04ppm. (if everything went as usual)
That makes sense.

@Randy Holmes-Farley
I believe my calculations are correct but please can you confirm.

Kh2po4.
Mix: 1 gram in 250ml.
1ml / 55gallons =~ 0.01ppm.

Thank !