Have a TDS meter on it's way to me from Amazon.

I understand how it works.
What I'm failing to grasp is what the reading means to me as a pond owner.

Basically, all I can do is add lime if my water doesn't have enough TDS - Correct?

I bought the meter primarily because it reads PH.
It will also read TDS, but I'm not sure it's data I can use.

Clay n Pray,
I looked thru the list of acronyms but didn't see TDS. Is that Total Dissolved Sulfates?

Probably total dissolved solids.

I love the clay and pray name.

New toys tools are out for delivery.

Digital PH & TDS meters plus API master kit are in hand.
I look forward to seeing an accurate overall picture of my water chemistry.

Of particular interest is ammonia, KH and GH.

If ammonia is high should I decrease the amount of feed, increase aeration, reduce biomass or a little of all three?

(It depends...right?)