thanks Dave, but you're right they are pricey, I think I'll try the mason jar that Wood suggested, looks simple and effective. Plus it leaves alot of extra cash for test kits. Now I can even spring for the phosphate test.

have either of you had experience testing bottom waters for DO or nutrients? any suggestions?


[Linked Image from img.whynotgif.com]
[Linked Image from i68.photobucket.com]