Reuse Water?

Hello all, I'm following a low tech method by Tom Barr where he states not to do water changes and so far it's working fine.
Occasionally I will move some rocks or a piece of wood and there is a build up of detritus that I want to tidy up,what I would like to do is syphon the detritus out and possibly filter the water with filter paper (unbleached) into a bucket and then return the filtered water back in the tank. Does anyone know if the filter paper has any harmful chemicals or even if anyone has done this?

I agree, polyfillter is the way to go.

Here is a comprehensive answer to your query: https://forums.thinkfish.co.uk/fishtank-filtration-and-cycling/polyfilter/msg32432/#msg32432