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Wildreefs · 2026-09-17T22:06:34-0400

Any idea what this can be ? Killer 4-5 fish this week already including a hippo,
Lemon peel, another clown, Koran

Fish Fan · 2026-09-17T22:12:38-0400

How long have you had the fish? In the second video, the surface of the water looks quite still, and I wonder if you're getting enough gas exchange.

The Clown in the second video has something going on, but could you post some new videos using the brightest white light you have, turning off all your blues for clarity?

Wildreefs · 2026-09-17T22:15:04-0400

Heres 1

Fish Fan · 2026-09-17T22:17:59-0400

Wildreefs said:
Heres 1

The surface water seems better than I thought from the first video, but could you get a little closer to the fish in distress?

Wildreefs · 2026-09-17T22:18:24-0400

Here’s all white. This week alone I lost a Koran, lemon peel, hippo and the partner clown, these clowns I’ve had for about 6 weeks. Went thru 3 weeks copper 2.5 ,
Prazipro.

reeffish · 2026-09-17T22:29:35-0400

looks like a bad ich and bacterial infection issues. the main tank is infected, and anything you put in will be at risk. Fish should be pulled into quarantine and treated, while the main display is left fallow for at least 80 days.

3 weeks in copper is not necessarily enough time for ich to run its course. I do 6 weeks minimum, with no signs of infection for a full 2 weeks prior to placing into my display.

not sure your clown will make it and your gem tang is in desperate need of help.

vetteguy53081 · 2026-09-17T22:31:28-0400

Wildreefs said:
Any idea what this can be ? Killer 4-5 fish this week already including a hippo,
Lemon peel, another clown, Koran

Clown shows accelerated ich and some of the fish seems to have bacterial fin rot and I suggest a large water change and running coppersafe at 2.25ppm for a full 30 days and ,monitor the level with a Hanna brand copper test . Also monitor ammonia level with a reliable test kit such as Hanna or Salifert brand

Jay Hemdal · 2026-09-18T07:45:24-0400

I'm not sure this is ich, it could be velvet.

I agree though - a large water change, adding an air stone (unless the tank has a skimmer in the sump, then that will suffice) remove any invertebrates, and then a 30 day coppersafe or copper power treatment at 2.25 to 2.5 ppm measured with the Hanna HR meter.

I will add that once fish loss has begun due to a protozoan infection, it is difficult to have it work fast enough to stop more fish from dying....