Tiger Barb Health Issue?

[2101]

My tank has been running for nearly 2 months, lightly planted to give them cover on one side and open water with wood the other side. I had 6 Tiger Barbs first after getting mature media. About 10days after having them i lost one, it seemed it had been bullied to death. Removed it did a water check and then a 20% w/c.

Today I've noticed one or two of them 'head standing' from time to time. not all the time, but i do see them doing it, is this part of their breeding before they spin around and such?
Or is this a health issue i need to be worried about? Readings are Ammonia 1.0 Nitrite/Nitrate 0.0 Ph 7.4 27C temp. I have also seen that since the loss of one the 5 remaining seem to split into a group of 4 and then one random that just sits in the reeds.

HELP

 

[ZoddyZod]

your ammonia is reading 1.0?

your ammonia should always read 0. Anything higher is considered toxi for fish and may well be causing their perceived health issues.

 

[2101]

I know it is meant to be 0. I have been carrying out daily 20% water changes to get it to drop which it has been, but that was my reading this morning.

 

[fluttermoth]

If your ammonia is 1, then a 20% wc will only reduce it to to 0.8, which is still too high.

You need to be doing changes of at least 75 or 80%, which will bring it down to 0.25 or 0.20.