I love it! It's been flawless so far! I feed minimum amount 4 times/day. Once you get the slurry correct for the amount you want to feed, you just replicate it & your good. I mix flat pack Hikari mysis, ocean plankton, a bit of spirulina mysis, a good squirt of Ocean Nutrition Fish Roe and a dropper of Selcon. It lasts a week. I add around 30-40ml (I'd say - never measured it actually) of 1.030 SW. I have the 3 extra tubs/lids so I do all the thawing and mixing once a month, one goes in the feeder, 3 in the fridge, change out once/week.
I keep a small pitcher of 1.030 SW in the fridge. I usually add around 30-40ml (again, never measured) to it after 4 or 5 days just to make sure that tub of food makes it the full week (always does).
I have yet to clean the lines, probably should do that soon, but it's functioning perfectly. I'm the type that will wait for some type of malfunction before I'll clean it

but the device works great for me. I would not hesitate to get one.