Quote Originally Posted by DBarsotti View Post
Thanks for the reply, Rob was right, you are a very good source of imformation.

I will try and get a buster pump with my next supply order but in the mean time how frequently should i be changing my RO filters? Should i be worried about the water it is producing? I am a big sps head so Water quality is at the top of my list. I havent even used this water on my display system yet just for the fact I am worried about it having ill effects on livestock..

What RoDi unit would you have recommended instead of the one i got? Is there other pre-RO filters i could get?

I will try to get a reading on the TDS from my well this week and let you know.

I am also going to have someone come out and check out our water softner. and how would i go about doing a water hardness test? They sell test kits for this? (sorry i am clueless)



thanks
i wouldnt be worried about the water it is producing if it is at zero, zero-4 is medical grade WFI which can be injected into a person it is so pure, think of it that way. as far as how often changing them, prefilters every 6 months, DI resin is usually the same but can last up to 1 year sometimes, and the membrane every 2 years.

there will not be any dissolved organics in the water because the RO membrane removes most of them and then the DI resin clings to the rest of them. the "tds" means total dissolved solids" so at zero... you have no total dissolved solids.

now to counter act what i am saying, did you calibrate the TDS meter before you used it? also did you calibrate using 2 solutions or one if you did calibrate it? be sure to calibrate it every 6 months with NaCl (sodium cloride) solutions with a known ppm to set it to.

like someone siad before its a common problem in well water to changes the filters so quick, what you can do is buy a stand alone filter or 2 and put 2 more prefilters on it before it enters your RO filters to try and cut the cost out some so it will go through 3-4 prefilters before hitting the RO rather than 1.