high Phosphate

[airvicconcre]

hello all.
my aquarium is 5 months old FOWLR at the moment. i checked my phosphate 3 days ago and it was .445 ppm. two days ago my readings came as .613ppm done by Hanna ULR so i ran gfo in a reactor. yesterday my phosphate dropped to .236ppm. i did a 10% water change today, my question is should i do my Phosphate testing now or should i wait as i just changed water? thanking you all in advanvce.

 

[Randy Holmes-Farley Verified Community Expert]

Thanks Randy.
I tried nopox for a few years did nothing for me. Swapped to 5% acetic vinegar. Didnt seem to do much.
Since using 20ml 37% vodka no3 now below 20ppm.
I struggled with no3 usually around 60ppm. Even only feeding once a day in 425xl tank.

It would likely take more than 150 mL of 5% acetic to have roughly the same impact as the 20 mL of 37% ethanol, but as long as the ethanol works and cyano is not a problem, it’s fine to use.