While mixing up a fresh batch of fixer, I inadvertently overfilled the mix tank to the 4 liter mark (rather than the 4 quart, or 3.8 liter mark.) I am not sure if this .2 liter over dilution is something to worry about or not, but on the other hand, I would hate to waste a fresh batch of fixer. Would it be possible to slightly increase the fix time to compensate? If so what knid of an increase in the standard 5-10 min fix bath duration would be recommended? Are there differences that I should be aware of between fixing film and/or paper. (This solution will be used primarily for fixing film.) Any advice or recommendations would be greatly appreciated.