White bump on my fish’s head he’s healthy and all but idk why he has

[domslimedout16]

Have you tested your water?

Yes

If yes, what is your ammonia?

0

If yes, what is your nitrite?

0

If yes, what is your nitrate?

.20

If I did not test my water...

1. ...I recognize that I will likely be asked to do a test, and that water tests are critical for solving freshwater health problems.

Do you do water changes?

Yes

What percentage of water do you change?

21-30%

How frequently do you change your water?

Every week

If I do not change my water...

1. ...I recognize that I will likely be recommended to do a water change, and water changes are critical for preventing future freshwater health problems.

This bump comes and goes and he’s completely healthy and eating i have no clue why it’s there i do water changes weekly so i have no clue

 

[Bbuckley]

View attachment 1480986This bump comes and goes and he’s completely healthy and eating i have no clue why it’s there i do water changes weekly so i have no clue

Dose the bump happen to go away around the time of doing a water change. If so I would up the w/c schedule to twice a week. Depending on your stocking 20/30% once a week isn't a real lot.

 

[Randles]

Up your water changes and see how that works out first. 20 - 30% per week isn't much. Try this twice a week instead of once.

 

[duanes]

Agree with the above.
20 ppm nitrate is on the edge being a chronic problem depending pH and water hardness.
So doubling or tripling water change frequency and volume would be my solution.
What size tank?
What is the pH?
hardness?