pulsing xenia

[BCOrchidGuy]

Your R/O water has a hardness of 4 dKH? the Kent salt would account for the final hardness then as I find it mixes up to a KH of 11.

You must be on a well, when you do a KH test have you done any Ca tests or Mg tests on your water? When is the last time you changed your R/O membranes and finally do you use a DI filter after your R/O unit, if not you should get one as it further polishes the water after the R/O unit is done with it. Remember R/O water isn't all that clean, it is cleaner than out of the tap but not real clean. IF your water is really bad a R/O unit will clean most of the stuff and the DI filter will clean the rest of it, the R/O unit saves the DI so it doesn't have to be replaced as often.

Aquarium Pharmaceuticals makes a Tap Water Purifier, a De ionizing filter and it will give you water that compares to distilled water. It is about $45 for the unit and the filter refils are $36 at King Ed Pets. I find the refil lasts me about 6 months as long as I don't try to do more than 10 gal/hour, then the filter comes apart.