Backyard Aquaponics
A place to discuss aquaponics

Disolved oxygen meter. Prob $400-500.

Google DO meter.

With your setup i dought if do is the problem you dont need do meters just a waste of money

Dissolved oxygen meter, but you don;t need one, your oxygen is fine with that air pump running.

How are your other levels? Ammonia, nitrites and nitrates?

Thanks for your information and help! I now know what a DO is! S/P are all looking good.
Ammonia is at 0 cause of partial water change the other day.
PH 6.7
Nitrite is not detectable.