Habitat - Indoor :: Reverse Osmosis Mineral Replacement

[SocraticTurtle]

I already have a Reverse Osmosis system and I'd like to fill my turtles' tank with pure R/O. I'm currently mixing non-softened well water and R/O but I'm still getting hard water stains. I understand that R/O lacks minerals such as calcium, magnesium, iron, etc., so I'm wondering... would it be suitable to use a product like CalMag Plus (from Botanicare, generally used as a horticultural supplement) to replenish the minerals my filtration system removes?

I would continue to increase the R/O to well water ratio but I'm concerned that I'll be encountering the same issue I would get with pure R/O (too few minerals). If products like CalMag would be dangerous to turtles, is there a better product available that would serve the same function?

PS hard water stains on the glass aren't my only concern. One of our RES is an avid basker and its shell accumulates a buildup of minerals as the water evaporates off the shell (over time, of course. That one loves to take a dip and dry off). I'm not sure if that would be a breeding ground for bacteria or not, but I'd rather sidestep the entire situation and feed the little guys some 0 PPM water with a consistently regulated amount of calcium and no pathogens/contaminants.

Thank you for your time. I've learned quite a bit of beneficial information on this site, and it's directly contributing to a happy environment for Thunder and Lightning.

[VeipaCray]

Have you checked out Kent's RO right or Brightwell's remineraliz products?

I've used both and preferred the remineraliz. Brightwell has now released another product called remineraliz-p. I've never used it nor can I figure out what the difference is between the two.

http://www.kentmarine.com/products/kent-ro-right.htm
http://brightwellaquatics.com/products/remineraliz.php
http://brightwellaquatics.com/products/remineralizp.php

Lastly, there's a product from Seachem called equilibrium. I've never used this one either but here it is:
http://www.seachem.com/Products/product ... brium.html



Please let us know what you decide to research and try. Any findings you are willing to share would be helpful to many of us.

Thanks!