Anybody know about the system where the toilet and grey water is piped out into underground rock beds with various stages of plants above ?

Cannot remember name, if i google bio toilets I only seem to get the commercially ready made toilets etc. Dont want a toilet, want the system after the toilet.

I have some designs, but they all seem to be lacking the essential details, such as stone pleacement, sizes, piping, holes in pipe, depth of various stone sizes etc.

Also they mention plants that are good at this kind of job, but never actually mention the plants name.

I am attempting to build 2, so certainly want some more specifics rather than try my own experiments. Don't want the shit to hit the fan.

I seem to remember a discussion in the farming forum, so a search is worth a look.

I'll move this to DIY where it will stay on page 1 longer

Couple of other terms someone may recognise if they have any info on it.

Could not find it in farming.

Off to google now.

Bio Filter, wastewater garden and tirtagangga water gardens in bali.