RO water is striped of all minerals (buffers for ph) if you are reading &.0 you are actually getting the ph of the testing solution not the water you need to add back some buffers to the water like kent ro right, electro right just to name 2 as well as disscus buffer for the right ph.
you could also just add some tap water to the ro till you get the right mix I strongly sugest you go to simply discus to their water work fourm there is all you will ever need to learn about get your water right and stable.
doing what you are doing now is leaving your water unstable.
also invest in a cheep TDS meter then you dont need kh and gh tests once you learn.
water chemestry is very complacated thats why here you get the advice to leave your water alone.
ps my provian spawns in my tap water TDS @375 ph 7.5
good luck
you could also just add some tap water to the ro till you get the right mix I strongly sugest you go to simply discus to their water work fourm there is all you will ever need to learn about get your water right and stable.
doing what you are doing now is leaving your water unstable.
also invest in a cheep TDS meter then you dont need kh and gh tests once you learn.
water chemestry is very complacated thats why here you get the advice to leave your water alone.
ps my provian spawns in my tap water TDS @375 ph 7.5
good luck
