09-17-2010, 12:02 AM
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Originally Posted by Byron
What I do is just add the conditioner when I start the refill (with a python). I don't add the conditioner to the tank first because I am draining out water, and at the tap I adjust the warm to get the temp correct before I switch the valve to refill. Then I walk back to the fishroom and squirt conditioner into the tank in front of the python. [This is now force of habit, so I never forget as I once did years ago.] In larger tanks this is fine, in small tanks there will be much more of an effect so ensuring it is added before would be best. I use a bucket for my 10g because the python has too great a water flow in such a small tank, and I treat the bucket obviously.
From what you've told us, I would suspect chlorine/chloramine to be the culprit. Rasbora are delicate as someone else mentioned. Chlorine/chloramine burns the gills, usually you will see the fish at the surface, then gasping, then dead. Chloramine has ammonia connected, and this does much the same, literally suffocating the fish.
I always check the fish in the tank right after the refill, as I once forgot conditioner in a 70g with 50% water change, and as soon as the tank was filled I saw trouble and realized instinctively what had happened; adding conditioner then saved most of the fish, but several died within minutes. It depends upon the amount of chlorine/chloramine in your water and the volume involved.
Yeah,What Byron said. It is same way I do it ,cept I run back to the tank in the living room , hopping over the coffee table and footstool, that my girlfriends grandaughter seems to always leave in a different spot.
She pushes the foot stool over to the tank to climb up ,and see the fishies.
If I'm quick, I get to the tank before the water from the python gets to the tank.
Perhaps not necessary that I run to the tank ,but girlfriend and grandaughter, find it humorous.