My JV3 uses a lot of ink in regular cleaning. I have turned off everything except 24hr cleaning and still waste about half a liter of ink per month. So I ran tubes from each chanel from pump to individual bottle. My ink configuration is double CMYK. So when bottle is full I put it back in bulk ink systems. I am doing it for about 5 months and there is no issue with color. I am just wondering can this mess print heads somehow. For example does anything happens with ink when it goes through crystals in print heads. Maybe is stupid question but I would appreciate any answer. It does save me a lot of money for ink.