yep, its this tank.
I have 2 circulation pumps in the tank and an older wet/dry with 2 foam blocks and 2 units of Chemi-Pure in it. There's also a pre-filter foam in the over flow box.
I just got a new SeaChem test kit and tested it this morning and it read high too. I've been using an API kit. I was beginning to think my API kit was old, but I guess not, lol. I'm going to test my tap water tomorrow and see what it reads. The water around here is ridiculously high in phosphate. I'm in the process of getting a R/O unit. Just haven't got there yet.
Flower recommended going to Wal-Mart or Meijer to get distilled water. I'll be doing that when I do my next water change. I may even call one of the bottled water places and check on 20-25 gallons of it a month.
I'm to the point of not adding any more inverts if I can't get it to, at least, level out below 20 ppm. I'm trying Instant Ocean's Nitrate Reducer. If it works, I'll be keeping a bottle on hand at all times.