Hello, I have added seachems acid buffer to this tank and the pH went up within hours causing a pH swing that stressed and killed some fish. I tried adding this every day for two weeks and then stopped because of this swing and fish fatalities. The golden rams in this soft tank have free swimming fry frequently but then eat them. The ones in straight tap are the ones with the rubber head and I believe he has a taste for fish eggs at night. I am not of course trying to breed these, one only has so many tanks. They persist with their reproductive efforts anyway. My water is weird. I had water with similar qualities when I lived in another local and all I had to do was add the distilled water and then a little peat and presto perfect water. None of the usually suggested stuff is working for me. I am stumped, I cannot figure this out. I do not run C02 on this tank but I do on some of my other tanks and pH is unchanged on these tanks as well. I am telling you I cannot change this pH, I have even experimented with water from the tap in plastic jugs, no change. I know my test kit works because when I test water from far away shops, I get similar readings to the ones the shop personnel will tell me. I am doomed I think. Maybe Santa will bring an RO unit, or at least I will get one for my birthday. I hope somebody out there has some ideas. Thanks in advance, Teresa. ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com.