I am starting this thread to kick off my efforts in understanding my pond's water chemistry.

This first post is LONG with data charts, links and whatnot...scan to the second post to get to the meat of the conversations.

I will be getting the test kits soon that will allow for the following parameters to be collected...

Total Dissolved Solids
Electrical Conductivity
Water Temperature

Before I start using the test kits, I would like to ask for any advise from those who are in the know. Things like...

1.) At what depths do you sample the water from for the different tests? Does it matter?

2.) Do you need to get water samples from multiple depths of the pond for DO even though I have an aeration system that is turning the pond over very well? Let's say I want to know the DO level at the bottom of the pond...without swimming down to the bottom, How do you folks get that sample?

3.) I have read that PH swings during the day so multiple test times are good to perform...any other tests that should be done at particular times?

4.) Am I missing any other common tests?

I hope to have results to share after this holiday weekend. Other than expanding my involvement at the pond, my main concern is improving clarity as it tends to hover around 18" Secchi and I think 30 inches would be a good goal to acheive. I have also collected some water for the jar test that I will post in a few days.

I am going to reference some charts (Thanks Ewest!) and such in this initial thread that were supplied in other PB threads or found on the web for my quick reference. Feel free to add any that I might have missed...

Additonal data from...


Ideal: 7.5
Acceptable Range: 6.5 - 8.5
Ideal: 0
Acceptable Range: 0.0 - 0.5
Ideal: 0
Acceptable Range: 0.0 - 0.25
Ideal: 0
Acceptable Range: 0.0 - 0.25
Ideal: 0
Acceptable Range: 0.0 - 0.5
Ideal: 0.1 - 0.25
Acceptable Range: 0.1 - 0.25"

A handy Alkalinity Conversion Calculator (thanks RydforLyf!)


"In short, 1dkh = 17.9 ppm"

Understanding Your Fish Pond Water Analysis Report...


Some Crazy stuff about TDS (Thanks again Ewest!)


Oxygen Saturation Chart From...


Pond Scum Field Guide link...


Everything about Ponds


Carbon Dioxide in Fish Ponds


Missouri Pond Handbook


Last edited by Quarter Acre; 09/27/19 07:03 AM.

Fish on!,