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Title: Erratic results, great concept
Review: Foremost, I like the idea a lot and having been using it frequently about a year (been refilling my own cartridges for 8 years). However, the results are inconsistent - sometimes it fills completely and other times it does not (even after repeatedly pressing the pump). My first choice is to try this drip system and let it sit for 2 hours. But I now always check the handy calibrations on the tank. When it does NOT fill, I revert to the manual syringe (yes, messy) filling. The Dataproducts system is quick, but not consistent.
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