Originally Posted by wicca27
im kinda new to all this water mixing stuff and plain and simple dont do it but i keep crystal reds, and oebt in tap water no ro unit here. i did have a berryed crystal red but kid decided the tank needed filled and use a part of a gallon of distilled and no more eggs but other than that all are great in tap water. i do not have a clue what my perameters are right now cause i have not owned a test kit in years but will be gettin one in a day or 2 so ill let any one who wants to know then. i do use miracle grow organic (peat based) capped with sand so that might have a bit to do with it. sorry for the randoms post but im just wondering what the gh/kh and all vs the ro water is about do most people have a prob with reg tap water so they cant keep caridina shrimp?
Caridina cantonensis seem to have a range of water parameters where they thrive. Mostly this means cool, soft water (low ph, low gh/kh).
Most people have tap water that is too hard for caridina cantonensis. The most reliable and probably the most effective way to deal with this is to use RO and use a mineral additive/supplement to mix back into the RO water in order to get the measurements to an ideal level.
If you are already keeping caridina cantonensis and having success using tap water then don't worry about it. It applies more to people who can't get them to live/breed with the tap water that they have locally or for people who just want to try and have everything as perfect as possible for them.