Hi, I'm new to the forum. I have an established 90 gallon planted,freshwater tank. It's been up for about 10 years and I've not had any problems until now.
Two weeks ago I added 3 juvenile Roseline barbs and 6 juvenile spotted cories. Over the next few days the emperor tetras in the tank started to die. No apparent symptoms, just found dead. It's spread to the other fish and now only a few left in the tank. No gasping or rubbing, no lesions. With a few exceptions, the fish look fine until they're found dead. The last 2 adult Roselines, within 12hrs, turned pale, stopped eating, then died. One of Kuhlis floated aimlessly for a hour or two then died.
I also added new cories and dwarf rainbows from the same source to a 20gal tank and they are just fine so far. The heater was having an issue at the same time, but the temp never dipped below 70.
Tank size: 90 gal
pH: 7
ammonia: 0
nitrite: 0
nitrate:0
kH: 4.2
gH: soft water
tank temp: 75
Volume and Frequency of water changes: 30% every week or two
Chemical Additives or Media in your tank: Fluval 4x filter with standard media, charcoal changed monthly. I use a Vecton 200 UV filter (turned off for meds). I know it's not the best idea, but in desperation, I'm trying Maracyn-2. On day 3 of treatment and lost 2 fish today.
Tank inhabitants: Until recently: 3 10yr clown loaches, 5 adult roseline barbs, 12 emperor tetras, a few Kuli loaches, 2 zebra loaches, 1 adult bristlenose, 6 juvenile spotted cories, 1 farlowella catfish.
Java fern, Cryptocornes, Vallisneria, purchased driftwood that's been in the tank for years.
Recent additions to your tank (living or decoration): 3 juvenile Roseline barbs, 6 juvenile spotted cories
Exposure to chemicals: none
One clown loach, 1 Roseline, the bristlenose, the cories, 1 zebra loach and a Kuhli left. Please help.
Two weeks ago I added 3 juvenile Roseline barbs and 6 juvenile spotted cories. Over the next few days the emperor tetras in the tank started to die. No apparent symptoms, just found dead. It's spread to the other fish and now only a few left in the tank. No gasping or rubbing, no lesions. With a few exceptions, the fish look fine until they're found dead. The last 2 adult Roselines, within 12hrs, turned pale, stopped eating, then died. One of Kuhlis floated aimlessly for a hour or two then died.
I also added new cories and dwarf rainbows from the same source to a 20gal tank and they are just fine so far. The heater was having an issue at the same time, but the temp never dipped below 70.
Tank size: 90 gal
pH: 7
ammonia: 0
nitrite: 0
nitrate:0
kH: 4.2
gH: soft water
tank temp: 75
Volume and Frequency of water changes: 30% every week or two
Chemical Additives or Media in your tank: Fluval 4x filter with standard media, charcoal changed monthly. I use a Vecton 200 UV filter (turned off for meds). I know it's not the best idea, but in desperation, I'm trying Maracyn-2. On day 3 of treatment and lost 2 fish today.
Tank inhabitants: Until recently: 3 10yr clown loaches, 5 adult roseline barbs, 12 emperor tetras, a few Kuli loaches, 2 zebra loaches, 1 adult bristlenose, 6 juvenile spotted cories, 1 farlowella catfish.
Java fern, Cryptocornes, Vallisneria, purchased driftwood that's been in the tank for years.
Recent additions to your tank (living or decoration): 3 juvenile Roseline barbs, 6 juvenile spotted cories
Exposure to chemicals: none
One clown loach, 1 Roseline, the bristlenose, the cories, 1 zebra loach and a Kuhli left. Please help.