Tank size: 105 litres
pH: 7.5
ammonia: 0
nitrite: 0
nitrate: 0
kH: 2
gH: 4
tank temp: 24*C
Filter: Aquael ASAP 700
Tank inhabitants:
5 zebra danios
1 dwarf neon rainbow (down from 6)
2 honey gouramis
3 bronze cories
3 peppered cories
1 nerite snail
Hi, hoping for some advice! My aquarium details are above. It's been set up since the end of June, and was fully cycled before any of the fish (except two danios that had to be rehoused quickly) were added. It's planted with various crypts, a couple of anubias, dwarf sag and various other plants that I can't recall the name of! With sand substrate and a piece of driftwood.
All the fish have seemed pretty happy in there except for the big issue that one by one I've been losing them! In the last couple of months I've lost a honey gourami and 5 out of 6 rainbow fish. The gourami I think was just bad luck (the two remaining seem really healthy) but there's clearly something majorly wrong for the rainbows. The lone survivor is currently swimming around with his nose up at the surface, which is what the others did before they died. There has also been an outbreak of algae in the last month or so, which again I'm taking as a sign that something isn't right... (I've had a 25l nano tank for 3 years that I've never had a problem with, I thought a larger tank would be easier!)
I've been carrying out smaller water changes every other day (was doing them once a week) thinking that there was an ammonia or nitrite problem, but I finally bought a liquid test kit yesterday and found the above results. (Twice tested just in case!) I think there's a problem with the kh but I don't know what to do about this, I don't want to add much and end up causing big problems elsewhere! Is the kh the problem, and what should I do about it?!
Sorry for the essay but wanted to give as much info as possible.
pH: 7.5
ammonia: 0
nitrite: 0
nitrate: 0
kH: 2
gH: 4
tank temp: 24*C
Filter: Aquael ASAP 700
Tank inhabitants:
5 zebra danios
1 dwarf neon rainbow (down from 6)
2 honey gouramis
3 bronze cories
3 peppered cories
1 nerite snail
Hi, hoping for some advice! My aquarium details are above. It's been set up since the end of June, and was fully cycled before any of the fish (except two danios that had to be rehoused quickly) were added. It's planted with various crypts, a couple of anubias, dwarf sag and various other plants that I can't recall the name of! With sand substrate and a piece of driftwood.
All the fish have seemed pretty happy in there except for the big issue that one by one I've been losing them! In the last couple of months I've lost a honey gourami and 5 out of 6 rainbow fish. The gourami I think was just bad luck (the two remaining seem really healthy) but there's clearly something majorly wrong for the rainbows. The lone survivor is currently swimming around with his nose up at the surface, which is what the others did before they died. There has also been an outbreak of algae in the last month or so, which again I'm taking as a sign that something isn't right... (I've had a 25l nano tank for 3 years that I've never had a problem with, I thought a larger tank would be easier!)
I've been carrying out smaller water changes every other day (was doing them once a week) thinking that there was an ammonia or nitrite problem, but I finally bought a liquid test kit yesterday and found the above results. (Twice tested just in case!) I think there's a problem with the kh but I don't know what to do about this, I don't want to add much and end up causing big problems elsewhere! Is the kh the problem, and what should I do about it?!
Sorry for the essay but wanted to give as much info as possible.