Bit of background, i've 2 tanks, a 64L and a 250L. 64L is issue free which rules out tap water issues.
In the 250L tank about a month back I bought a pair of female Dwarf Gourami, within a week one was dead, LFS replaced it, that died too within 5 days, my 8 Kuhli Loach population was exterminated & my Zebra Danios were all gasping at the surface within the same week.
In this same tank I have an L200 Pleco, several Otto's , a ton of Amano Shrimp & several Vampire shrimp, none of which have had any casualties.
Tank has had treatment for parasites & bacteria.
I took the remaining 5 out of 10 Danio out of the tank to quarantine in a lower temp tank within days of this starting, one was dead the following morning & the other 4 seemed to recover although one had a tattered tail.
A few weeks later I transfer the Danio back, within 36 hours of transfer the 4 Danio are now 2 Danio.
Any suggestions as to what the hell might be going on?
In the 250L tank about a month back I bought a pair of female Dwarf Gourami, within a week one was dead, LFS replaced it, that died too within 5 days, my 8 Kuhli Loach population was exterminated & my Zebra Danios were all gasping at the surface within the same week.
In this same tank I have an L200 Pleco, several Otto's , a ton of Amano Shrimp & several Vampire shrimp, none of which have had any casualties.
Tank has had treatment for parasites & bacteria.
I took the remaining 5 out of 10 Danio out of the tank to quarantine in a lower temp tank within days of this starting, one was dead the following morning & the other 4 seemed to recover although one had a tattered tail.
A few weeks later I transfer the Danio back, within 36 hours of transfer the 4 Danio are now 2 Danio.
Any suggestions as to what the hell might be going on?