My tap water comes out at a pH of 6.6. I've been changing it to neutral using Seachem Neutral (which is a phosphate buffer). Out of the tap, the water is: kH3, gH of nothing, phosphate of .5. Obviously, when I add the Neutral Regulator, I get a reading of more than 10 on the phosphate. I have two tanks- a 10g planted with a betta and 3 otocinclus, and a 30g planted with a feeder goldfish, 6 white clouds and 6 cory cats. I also have DIY CO2 on both.
I am pretty new to all of this- since September. I've read not to change the pH on your tanks, but now that these fish have been in a pH of 7, I'm nervous about just treating the water for metals and not changing the pH when I do a water change. However, I read you're not supposed to use phosphates with plants? Things look pretty good to me as far as the plants and fish....
What should I do about the pH? Slowly mix tap water in that is a lower pH and allow the fish to acclimate, or is there something else?
Thanks so much for your help! So far, I've been able to keep plants alive and actually get some growth thanks to all the info here!