hi i ahve recently notice some white spots or clumps on the side fins of one of my oscars i was wondering what this is? my water parameters were pretty bad i did not relise as i ahvn't tested in awhile because the oscars were behaving normally with my weekly water changes

amonia: 0ppm
nitrite: 0ppm
Nitrate: 40+ppm

i am currently doing a massive water change...

Are these water readings before or after the water change?

And is a pic possible?

before, i can try and get a photo but no promises how good it will be...

If those were your before readings all that is needed is about a 30% water change... Not bad at all..

Yea try and get a pic please!

dexter wrote:


This is why you should get in the habit of testing your water BEFORE every water change- it will give you an early warning sign, will tell you if your filter isnt wroking well (ammonia and nitrite) and also tell you if you are not doing enough water changes (nitrates above 40)

As for the spots/clumps a pic would help