Product review (1 stars): TDS meter tested.  Does nothing!
Does absolutely nothing.  Water quality equal to tap water.

I replaced a 1 year old authentic GE filter with this.  I did a taste test and used a TDS meter to measure dissolved solids.
Upon opening the box, the EcoAqua filter distinctly lighter than the old GE filter.  As though it didn't have as much filter media inside.

I replaced the filter, confirmed no leaks (a common problem others reported), and flushed several gallons of water through it.  During flushing I noticed there was significantly more water flow through the EcoAqua filter than the GE filter.  Another notch for the "not much media inside" theory.

TDS Tests:
Tap water: 225 ppm
1year old GE filter: 180 ppm (expected)
New EcoAqua filter: 215 ppm

Taste Test: The old GE filtered water tasted crisper and had less "flavor" than tap.  The EcoAqua filtered water tasted just like tap water.

I'm tempted to cut the EcoAqua filter in half to see what's inside.  My guess is that it really is hollow!  Back to the seller it goes.