I have a booster pump going to the membrane so pressure's not an issue and the permate pump and pressure tank keep the di under constant pressure.I am going to try just the silica thru out.My incomeing tds is normally only 230(well water) the usual tds going to the first di's from permate pump is usually 3 to 5 tds out of the first di's is 0 to 3 and the final add on di is always able to produece 0 tds.I run a sediment filter first and two carbon block water blaster filters after the sediment filter . Water then goes to the booster pump directly to the membrane.Membrane rejected water is then sent to permate pump to pressure tantk then to the first di's then sent to the final add on dual di's.I'm pretty happy with the performance really.I change the small di's about every three months and the final di's every six months with the filters.The unit is capable of filling the 50 gallon storage tank very quickly(5 to 6 hours usually).I am curious to see if the silica di will extend the di life.We'll find out. thanks for the input
Last edited by binford4000; 01-20-2012 at 04:05 PM.
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