Did you test your tap water for nitrate? It's pretty common in areas where there are farms.
Gonna test it tonight since I'm at work right now
Did you test your tap water for nitrate? It's pretty common in areas where there are farms.
Where do you live? 0ppm "tap water" almost impossible to believe unless you're using RO water or other source water that not from City Water Supply.tested the tap and its 0ppm of nitrate
Why your water PH keep droping?
Unstable PH would likely killing your fishes faster than ammonia.
If you have cheap fish then I would say leave your tank alone and stop messing around with all water change, everything will be ok.
Where do you live? 0ppm "tap water" almost impossible to believe unless you're using RO water or other source water that not from City Water Supply.
Jardini Arowana actually refer soft water so if your PH stay stable at 6.0 then no need to mess around your PH, stop feeding your Aro for couple days and see if ammonia still exit in your tank. Also, fish getting gill curl if its living in high ammonia environment for long period of time, and lacking of water movement can lead too gill curl for some fish species too.