I bought a Mighty Mite last month. I've used it to make about 60 gallons of water so far. I was getting 0 TDS with tap water coming in at over 500 TDS. Recently I've been getting around 6 TDS. I use a Rubbermaid container to store the water in. Could the TDS reading be coming from the container? Could I have already gone through the filters and need replacing (I sure hope not lol)...? I'm new to this whole RO/DI thing so any help is appreciated! Also, is the quality of this water so horrible for a soon to be softie/LPS reef?