BStreep,

Thanks for your offer and I hope I won't have to take you up on it. Hadn't thought about the trates in the water that I'm making, but I will check the RODI now to see if something is amiss.

yeah, about the clams, I, uh, I got them at HEB. Uh.... probably not where most aquaria folks go for their livestock but I kind of thought it was cool at the time. I will check those while working on the test of the RODI.

I did a complete thirty gallons last night. This time I shut off my return pump, siphoned what I could from the bottom tank and the remainding 30 gallons was pulled from the display. This was kind of late last night.

This morning I verified that my testing kit still read in the 40 to 80 zone, depending how I held the sample up to the light or to the chart.

It's quite vexing and to tell the truth I am no longer certain that I want to go into a bigger tank. Not until they come up with a good nitrate filter that is.