The union between the two prefilters (the larger kind not the quick connect fittings) has a bad leak (can I puddy this up somehow?), the preshure gauge does not work (might have low preshure but know its not NO preshure, registers nothing), the screw canister for the carbon filter has a bad leak no matter how tight I crank on it (not sure its fixable), I can get water out of the ro discharge but with all those leaks it is wicked slow. I ordered a di add on from air water and ice and connected it but after letting it run over 2 hours last night there was not enough ro water in the di chanber to even fill up the canister 1/4 of the way (and more puddling in the garage than waste water in the bucket. Before I ran it I opened it and the filters were new but the insides of the top of the housings had to be cleaned because they were mucky and there was a little bit of water in the lines when I brought it home as evident by the small puddle on my wood floor when I picked it up to hook it up. Its not like I can really complain and its not mtrc's issue, I mean it was free! I was just disapointed in seachem, espically since I am a user of their other products........was a user I mean. I just need to find a reliable source of water locally untill I can save up enough to get a good new unit (blew my fish budget on the di add on)