Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations Pond full of dead fish

Donnie I would not spend my money on that meter. It does not really measure DO but only is a very rough guess based on light penetration and temp of what O2 'normal" water would hold.

Glad some fish survived.

Cody adds to Ewests post:
Donnie, I second Ewests opinion of this meter. I bought one of those a long time ago. It calcuates what the DO SHOULD be based on temperature. It does not really measure dissolved oxygen similar to the way more expensive meters do by sensing DO passage through a membrane.