Pond and lake problems, diagnosed | Alchemal

A small pond entirely covered by bright green surface growth — A pond taken over by surface growth. The cause is almost always below it.Photo: Benjamin Lehman, Unsplash

What are you seeing?

Pond algae: fix the conditions that favor it
Green water, string algae, mats that return on schedule. See what favors the bloom and what changes it.
Murky pond water: find the cause, then clear it
Brown, cloudy, or hazy water can have several causes. The fix depends entirely on which one you have.
Pond muck: digest the organic layer
Years of sludge on the bottom and dredging feels like the only option. See what oxygen can digest, what it can't, and how we measure it.
Aquatic weeds: what oxygen can and can't do
Weeds taking over, or is it algae? The fix is different for each, and telling them apart comes first.
Stagnant water and mosquitoes: the honest answer
Still water and a mosquito season that won't quit. Here is the ecology behind it, and which tools act now.

What are you smelling?

What are you losing?

Fish kills: the overnight oxygen crash, prevented
Fish gasping at the surface, a loss overnight. See what causes the oxygen crash and how a continuous reserve prevents the next one.

Tired of treating it?

Tired of algaecide every month? Exit the treadmill
You've done the math on the jugs already. See why the monthly cycle escalates and what it costs to step off it.

More problem pages are in the works. Each one publishes with its mechanism, an honest timeline, and a section on when this isn't the right fix.

Your symptom might not be listed yet.

Describe what the water is doing and a specialist will tell you what it usually means.

Request a water assessment