Phosphate &

[jf3017]

My phosphate and nitrates are out of control. We left out of town for a few weeks and when we returned there was algae everywhere. We could not get the Hanna Reading to budge: Phosphate 0.90 (max reading) and Nitrate 75 (max reading)

We finally noticed that the skimmer was not bubbling correctly last week. Once we fixed that the Nitrates have started to come down: 64.5 now. Phosphate still doesn’t budge. This started in Dec 2025.

I’ve been dosing NoPox by Red Sea once a day - 7ml

I use the GFO shown on the picture. I use the recommended dosage of 1gram per gallon (70 gallons). I change it every week.

Because the phosphate is so high I’m thinking I should be using more GFO in order to get it down and then less once is stabilizes.

Any thoughts?

Started Dec 2023

55 gallons on top
13 gallons in sump

68 gallons Total

Fish INVENTORY:
One 3 inch Lamarck Lyretail Angel Fish
One 4inch Blue Tang
One 6in Blotched Foxface
One 1.5 inch Clown Fish
One 3 inch Yellow tang
One 1.5 inch lawnmower blenny
One 1.5 inch watchman goby

 

[1ocean]

Take it slow to bring it down, don't rush for huge results in a few days...
The GFO maybe getting exhausted before the week is over so maybe either adding more or changing twice a week