RO unit break-in period

[emorrison33]

I just bought a Seachem Pinnacle series RO unit to replace the old outdated one I bought at a yard sale. Is it normal for the unit to go through a break-in period. I have only "made" about 10 gallons of RO water, but I am testing phosphates at .25 - .5 ppm. I contacted Seachem adn they said the unit would remove 99.9% of phosphates. My tap water tests phosphates at 2.0 ppm, so I know the unit is removing some of the phosphates. Any advice ??

 

[fishfreek]

If the unit is used its very possible you need to replace the membranes before you can get optimal efficency from the unit.

 

[emorrison33]

The RO unit is brand new. My old one was the one I bought at a yard sale.

 

[seaham358]

is it a RO or RO/DI?
I would think tht 10 gallons is enough to see what your going to end up with. A second DI unit would be the answer, or if its just a RO unit then you need a DI housing.