Hey all, I'm new here but not a new fish keeper.
i have several different tanks and have been keeping them for years, but I'm having issue with one of my tanks and I'm stumped at what is causing it.
water parameters are:
pH: 7.1
gH: 147
Ammonia: 0
Nitrite: 0
nitrate: 5
its a 3 foot (200 liter) general tropical community tank
its been running for 3 years now with no issues, about 8 months ago i changed the filter in it to a fluval 406 canter filter as my Eheim was slowly but surly dying. used a lot of the media from my Eheim to avoid having to re cycle and all was fine. about 6 month ago i decided to add some discus into the mix and lowered my pH down to 6.7 and gH down to 71.6 and changed my gravel to black quarts. once again all was fine and all fish seemed healthy and happy. at the end of Dec i went over seas for 2 weeks and left my tanks in my mums care. this particular tank was stocked with 4 small discus, 20 neon tetras, 20 harlequin rasboras, 10 rummynose tetras, 3 corydoras, 6 peppermint bristle nose, L168 pleco, 2 kuhli loaches and 2 dwarf loaches
when i got back from being over seas i had lost majority of my schooling fish and one of my discus. i assumed she was over feeding as planaria were present. naturally i did a series of small water changes hoping that fixed it up but over the following weeks i lost more and more fish, to the point all i had left was 4 harlequins, 3 rummy nose, 1 corydora, 5 peppermints and my L168 i did a course of Melafix and for 2 weeks didn't lose a fish so i thought all was well, over the next month i added more fish to try and re stock it. Once again all seemed fine and my tank was stocked with the remaining surviving fish and 7 phantom glass catfish, 4 small angel fish 10 more rummy nose and 1 more corydora. i lost 2 of my angels and spoke to my local aquarium dealer who suggested it may worms or possibly be the gravel so i have now changed the gravel to carabisea moon sand and treated the tank with fluke and tapeworm tablets, but i have now lost my other 2 angels and the new corydora and half my rummy nose?
All fish are happy and eating and looking healthy and then the next thing you know they start swimming strangely and bang within a few hours are dead dunno what to do but i know I'm not adding more fish until i can work out what is causing the issue.
i do weekly 25% water changes and the temp is always stable at 26 degrees, water parameters have already read the same apart from when i slightly lowered them for the Discus and when i raised them again once i lost the discus
sorry about the long post but thought it would be easier to give all the information at once.
and advice will be really appreciated, hoping i can get to the bottom of this!!
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i have several different tanks and have been keeping them for years, but I'm having issue with one of my tanks and I'm stumped at what is causing it.
water parameters are:
pH: 7.1
gH: 147
Ammonia: 0
Nitrite: 0
nitrate: 5
its a 3 foot (200 liter) general tropical community tank
its been running for 3 years now with no issues, about 8 months ago i changed the filter in it to a fluval 406 canter filter as my Eheim was slowly but surly dying. used a lot of the media from my Eheim to avoid having to re cycle and all was fine. about 6 month ago i decided to add some discus into the mix and lowered my pH down to 6.7 and gH down to 71.6 and changed my gravel to black quarts. once again all was fine and all fish seemed healthy and happy. at the end of Dec i went over seas for 2 weeks and left my tanks in my mums care. this particular tank was stocked with 4 small discus, 20 neon tetras, 20 harlequin rasboras, 10 rummynose tetras, 3 corydoras, 6 peppermint bristle nose, L168 pleco, 2 kuhli loaches and 2 dwarf loaches
when i got back from being over seas i had lost majority of my schooling fish and one of my discus. i assumed she was over feeding as planaria were present. naturally i did a series of small water changes hoping that fixed it up but over the following weeks i lost more and more fish, to the point all i had left was 4 harlequins, 3 rummy nose, 1 corydora, 5 peppermints and my L168 i did a course of Melafix and for 2 weeks didn't lose a fish so i thought all was well, over the next month i added more fish to try and re stock it. Once again all seemed fine and my tank was stocked with the remaining surviving fish and 7 phantom glass catfish, 4 small angel fish 10 more rummy nose and 1 more corydora. i lost 2 of my angels and spoke to my local aquarium dealer who suggested it may worms or possibly be the gravel so i have now changed the gravel to carabisea moon sand and treated the tank with fluke and tapeworm tablets, but i have now lost my other 2 angels and the new corydora and half my rummy nose?
All fish are happy and eating and looking healthy and then the next thing you know they start swimming strangely and bang within a few hours are dead dunno what to do but i know I'm not adding more fish until i can work out what is causing the issue.
i do weekly 25% water changes and the temp is always stable at 26 degrees, water parameters have already read the same apart from when i slightly lowered them for the Discus and when i raised them again once i lost the discus
sorry about the long post but thought it would be easier to give all the information at once.
and advice will be really appreciated, hoping i can get to the bottom of this!!
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