View Full Version : 0 phosphate readings- all the time?

06/26/2017, 12:27 PM
My current tanks are 2 yrs old.

My parameters are stable.
I do 15% weekly waterchanges, feed reef roids twice a week, pellet, mysis, brine for the fish (alternating throughout week)

My nitrates sit around 2 the most 5 (salifert kit)

My phos is the issue. Its always read as 0 from The beginning. The only time I can get a reading is if I use water from the sandbed to test. Then it's 0.03

I have no algae issues besides the common film on the glass. No cyano, gha etc.

The rest of my parameters are stable.

Alk 8.7
Ca 400
Mag 1450
Ph 8.2

I dose esv bionic 2 part daily to maintain daily consumption.

Any idea why my phos has 0 readings from the water column?

06/26/2017, 12:58 PM
Simply put... The Input = The Output.. (or input is less than or equal to output)
When input > output the levels will increase and you will have phosphate issues..
Same goes for anything..nitrate,etc...

Whats the problem? ;)
and which test kit are you using (salifert there too?) .. Many are really not that accurate in the low ranges

06/27/2017, 11:54 AM
Could be fine ;new sand often sucks it up for a period of time.

06/28/2017, 10:10 AM
What are you using to test? We used a Salifert and always got 0. Switched to a Hanna and got much higher.

06/28/2017, 02:18 PM
Salifert kit is being used.

My tanks are 2.5yrs old, so sand isn't new.

My concern is the balance of p04 and n03. Not that n03 is high. Sits between 2-5.