View Full Version : RO/DI Question
Parnold
02-28-2009, 10:37 PM
Testing to figure out my ph and alk problems lead me to the RO/DI unit. Tap water read 7.9 ph and 9.5 dKh. After RO/DI the ph is less than 7.5 and Alk are not high enough too get a reading. Is this supposed to happen. If so how would you go about correcting the problem.
Thanks
Paul
hillegom
02-28-2009, 11:59 PM
The idea behind using a RO/DI filter is to rid the water of all TDS (total dissolved solids.)
This water is deionied and should have nothing in it.
So you need a TDS meter to see if the filter is working.
]The water comming out should be crystal clear and a TDS reading close to 0. Now that you have good water, you will have to add salt, then test this water, add calcium and/or carbonates, depending on what is lacking
fkshiu
03-01-2009, 12:11 AM
If so how would you go about correcting the problem.
Add your salt and mix thoroughly.
o.c.d.
03-01-2009, 01:08 AM
Newly mixed saltwater has to build up a carbonate buffer through a chemical reaction with atmospheric carbon dioxide which takes a while. I mix after my water change and it sits until the next water change rarely do I have to do anything to my mix.
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