skynoch;2068874; said:I've got extremely hard water with a ph of 8.5 and my leos,pearl,henlie,motoros and castexi all do fine with it and have no problems. My motoros are reaching maturity and my male is making attemps to breed so I see no problems with you using tap water for yours.
If you are planing on getting a more sensitive ray like a flower or tiger I would suggest using a mixture of r/o and tap at first and then slowly phasing out the r/o to just tap. I have had problems with wildcaught flowers not acclimating well in just tap. I can give you more details if you are getting a sensitive ray.

It almost seems like you have something buffering it..
Any calcium based ocean type materials in the tank? seashells, etc?
Its hard to believe that small amount of tap water will buffer it like that..
You have 2 drip lines coming out of your R/O.. your not using the water from both right?
I would talk with the other Canadian raykeepers and see what they say.. The problem with R/O water is it is near impossible to produce enough R/O water to meet the demands of the water change schedules that stingrays require.. and even then, it's unstable.


