teehjaeh57 - I'm using the YSI DO200 with 30' cable. My ponds are about 25' deep so I had to go with the longer probe.

I am not a pro by any means but felt it was a reasonable investment. I bought it a couple years ago.

It is a "Bill Dance" edition of the DO200. It is yellow and came with a video of Bill Dance and his narrative on using the D.O. meter to find fish. For what ever reason it was a bit cheaper than the regular DO200. I think I paid in the range of $350-375 for it. It works perfect for my purposes.

Chuck

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