Using DI water only in the LMD.... why not?

[fkshiu]

There is no reason not to use DI-only water in the GVRD. I used to use DI only water when I had a 46 gallon in the form of an AP Tapwater Filter. The only reason why I went RO/DI is because the AP just couldn't produce enough DI water conveniently for a 150g system.

I believe OA uses DI-only water the last time I checked there.

A full-out RO/DI system is an added measure of filtration when the water quality does go down such as what happened around here last winter - although the pre-filters took the brunt of the extra turbidity rather than the RO membrane.