Off the scale nitrite spike!!! AT LAST!!!

[LookoutTrout]

I have used them sparingly in my main tank and never noticed any trouble, but most of my ferts go into the water as an EI mix.

[Bluetaurus]

I have used them sparingly in my main tank and never noticed any trouble, but most of my ferts go into the water as an EI mix.

I will leave it a while till they have dissolved completely and the water changes have rid the column of any traces then I will change to a new product.

[Bluetaurus]

Interestingly I went out to check my tank over before my week away and the previous test, after a few hours on the shelf had changed from red to orange.
Just done 2 tests on the tank in question and both clear. Zero nitrites.
Don't add up as I planted the root tabs a few days ago and would imagine they should of leached through the sand by now.
Not a man of science but guess there is an explanation for that.
Done a further test on the cup with root tabs which is now completely disintegrated and it read 0.25 to 0.50ppm.
Not as red as this morning.

[LookoutTrout]

Could it be your filter isn't doing it's job very well and is the reason for the swings. I can't remember if that's already been covered.

[Bluetaurus]

Could it be your filter isn't doing it's job very well and is the reason for the swings. I can't remember if that's already been covered.

Yes it's a possibility. I have a bigger filter which will be in place on my return from holidays.
I'll run both.
However that does not explain the cup water changing colour. So it must be a false positive, the fish are healthy, eating, swimming.its been over one month after all.