Probably from the ammonia.
Yes. At 86 the ich will stop reproducing. At 89 for, 3-4 days,will be killed. So as long as the the temp is increased slowly and the aren't heat sensitive then it'll be ok.
89 degree temps are ok. Gotta keep a pump or powerhead to keep water churning as oxygen will be depleted.
The heater or more than one should be able to handle it.
Also depends on whether the person doing it can perform the tasks. That factors into a lot of it.
But should make the suggestion for either 86 or 89 will get he same result.
Yes. At 86 the ich will stop reproducing. At 89 for, 3-4 days,will be killed. So as long as the the temp is increased slowly and the aren't heat sensitive then it'll be ok.
89 degree temps are ok. Gotta keep a pump or powerhead to keep water churning as oxygen will be depleted.
The heater or more than one should be able to handle it.
Also depends on whether the person doing it can perform the tasks. That factors into a lot of it.
But should make the suggestion for either 86 or 89 will get he same result.