Lasted sooo looong......

[Sir Patrick]

Not bad for 3 years, and still spitting 10 tds! No DI.





Unfortunatly, water production had gotten pretty slow.....

Changed all filters and membrane today for the first time in 3 years!

[Sir Patrick]

Not bad for a 9 year old E-bay system w/ some decent filters and membranes!

[larryandlaura]

Those are way over due!

[creefer]

WOW!

I change my DI cartridge about every 3 months but have not done any of the filters in 12+ months and getting 0 TDS.

Looks like a good decision to swap those out!

[Sir Patrick]

The new filters are putting water through about 4 times faster now. Very nice!

Unfortunatly, the tds has gone up to 22, instead of the 10 it did before, 2 hours into running.

I think my next purchase will be DI......cant hurt, right? It about time, lol!

[larryandlaura]

It definitely wont hurt!

[creefer]

You will LOVE DI! It's an inexpensive thing to get anyway.

[purerebel]

Wow Chris those are umm nasty. How do you add a DI filter into the loop?

[AZDesertRat]

Please remember, the sediment filter and carbon block have very little to absolutely nothing to do with TDS, the yare there to protect the RO membrane from sediment, particulates, colloidal materials and chlorine. The former are measured in microns and up to visible with the human eye or about 40 microns down to maybe 1 micron or in some cases 0.5 microns. The latter, chlorie is usully present at around 1 ppm or mg/.L so would be 1 TDS.

TDS or dissolved solids are just that disslved in the liquid not suspended and in the 0.0001 micron range, many many times smaller.

The RO membrane is the most expensive piece of the system and the workhorse, removing 90 to 98% of the TDS, it makes no sense to not change filters when their sole purpose is to protecdt it so it can do its job efficiently. Dirty filters reduce pressure to the membrane making it less efficient and reducing DI life if you have DI, costing you money and lower water quality. Your reef suffers.

What do you gain?

[Sir Patrick]

Nothing gained....

I was just surprised, after 3 years, it was still spitting out a TDS of 10 w/o DI.