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HL649
03-25-2013, 08:25 AM
I thought it would be interested in seeing what kind of filtration most people use for their tanks.

Myka
03-25-2013, 03:46 PM
Keep in mind people's locations. Those at the west coast have ridiculously low TDS out of the tap (like <20 ppm) and many of them use DI only or prefilters only (sediment and carbon) or sometimes nothing at all.

lastlight
03-25-2013, 04:13 PM
at even 20 TDS I would think that you'd BURN through di resin extremely fast to the point that running only di would be much more expensive than your typical operation of a full ro unit. anyone using only di able to tell us how often they have to replace it?

fixerupper
03-25-2013, 04:25 PM
Keep in mind people's locations. Those at the west coast have ridiculously low TDS out of the tap (like <20 ppm) and many of them use DI only or prefilters only (sediment and carbon) or sometimes nothing at all.

+1
I use a 6 stage BRS RO/DI chloramines unit for Edmonton water. Output is now 0 ppm TDS.

My costco RO only system unit measured 3-7ppm TDS after a filter change. Sounds bad but that's about right for a 97-98% rejection rate. I'm guessing the same Costco unit used in the lower mainland would give you readings of 0 ppm and filters/membranes would last a good deal longer.

reeferfulton
03-25-2013, 09:51 PM
useing a maxcap 90 from spectrapure .. dual tds meters
TDS in 14-20.
After RO 0 and so on .

House pressure after to sediment filters is 63 psi with new filters .

Cal_stir
03-25-2013, 10:02 PM
I'm in the chemical valley, tap water TDS is over 200ppm, 10 stage RODI for me.