Good idea, but I am looking at that filter and thinking one shower gets one palmfull of shampoo and equal amount of soap that will go directly into that filter. How much soap can that filter hold? or does the soap just run through?
Does the filter need to be back flushed every time?
Sounds like the shower water gets used once, then permanently disposed of into the gray tank, so at least it should be bacteria free. I would not want water out of the gray tank, ever.
Those filters are meant for micro things that are not visible, to filter large quantities of soap and body dirt is not what they are intended for. I am skeptical.
