Dots all over fish since water change yesterday

[ug94bxs]

Hello

I have a tropical fish tank (400l) and i did my water change yesterday as I do every two weeks for the past 6 months

The only thing which different is I cleaned the gravel by removing gravel and washing it in clean water. I used all the usual products to treat the water etc

This morning I noticed a few spots on many of the fish

Any idea?

 

[JuiceBox52]

It's ich . Have you recently added any new fish? Slowly turn the temperature up to 86°f , a few degrees every hour or two. Leave it at that temp for two weeks to kill the parasite. It needs to stay hot at least one week after the spots disappear.

 

[ug94bxs]

I added some new fish about two weeks ago.

I will use API White Spot Cure as well, as well as turning up the temperature as suggested

thanks

 

[JuiceBox52]

I wouldn't using the medication, except as a last resort, as it can be very damaging to fish, especially tetras and the like. I only use medication if I end up with a "superstrain" that is heat resistant, but that's not very common

 

[ug94bxs]

ok, no issues with the heat being at 30 degrees?

 

[JuiceBox52]

Nope! As long as you raise it slowly as not to shock them. And make sure the water is well oxygenated

 

[Colin_T]

Have you added anything to the tank in the last 2 weeks?

Why don't you use a gravel cleaner to clean the gravel while it's in the tank?

 

[Byron]

I am not convinced this is ich. I had an identical issue last Sunday. I did the water changes in two tanks as usual, and decided it was time to move the group of 7 hengeli rasbora into the 40g tank so they were not alone in the 20g any longer. The rasbora looked fine in the 20g, but as soon as they got in the 40g they were covered in what looked like ich. I instinctively knew that was just not possible, seven fish becoming covered in ich within two or three minutes when no sign of ich was present beforehand. What it actually was were CO2 bubbles from the fresh water. Some days the tap water is super-saturated with CO2, other days not; I even see "pearling" fro some plants responding to the CO2 influx. Everything in the tank can get covered in tiny bubbles, plants, tank walls, wood, and the fish. All of the bubbles disappeared by next morning.

The tetra in the last photo is, to my eyes, definitely covered with CO2 bubbles. I would not do any treatment. If the bubbles have not disappeared in a couple days, maybe...but I doubt it.

 

[JuiceBox52]

That's so interesting! Weird

I am not convinced this is ich. I had an identical issue last Sunday. I did the water changes in two tanks as usual, and decided it was time to move the group of 7 hengeli rasbora into the 40g tank so they were not alone in the 20g any longer. The rasbora looked fine in the 20g, but as soon as they got in the 40g they were covered in what looked like ich. I instinctively knew that was just not possible, seven fish becoming covered in ich within two or three minutes when no sign of ich was present beforehand. What it actually was were CO2 bubbles from the fresh water. Some days the tap water is super-saturated with CO2, other days not; I even see "pearling" fro some plants responding to the CO2 influx. Everything in the tank can get covered in tiny bubbles, plants, tank walls, wood, and the fish. All of the bubbles disappeared by next morning.

The tetra in the last photo is, to my eyes, definitely covered with CO2 bubbles. I would not do any treatment. If the bubbles have not disappeared in a couple days, maybe...but I doubt it.