I use the Fotospeed Inkflow system in my Epson R3000 printer having bought the system with the printer nearly 2 years ago.
Being a mainly monochrome worker I obviously use more of the black inks than the colours.
I have just been refilling the cartridges and realised that there is a 'Use By Date' on the inks which means that even with the black inks I will not use the full bottle before this date is reacher - early in 2016.
This means that there is no cost benefit in using the Fotospeed inks over the Epson inks, indeed it is working out a little more expensive, so I shall revert to the Epson originbal inks when the 'Use by Date' of the Fotospeed inks is reached.
Before doing so, I just wonder if anyone has used the Fotospeed inks beyond their use-by-date and if so has experienced any deleterious effects?