Laotriton laoensis water quality

[physalia]

Hi folks, I have been scouring the forum hoping to find suggested water chemistry parameters for L. laoensis. All I have been able to find are temperature ranges. Can anyone, especially those successful with breeding them, tell me what pH and KH/GH you maintain and recommend? Does anyone know what the water chemistry is where they are found in nature?
thanks a million!
justin