ryan8
Nano / Hammer / LSV / O-Phos / D020
Fritted disc would be the most diffused and the drag is subjective based on water level. There's also peyote pillars and matrix percs.
Thanks! What about in the context of cheap high quality glass? Not necessarily cheap even, but just with a priceerformance ratio similar to the D020. I don't think any of these diffuser designs could be found on dhgate/alibaba. I do see honeycombs and 10 arm percs - how would those compare?