Pond Boss Magazine
https://www.pondboss.com/images/userfiles/image/20130301193901_6_150by50orangewhyshouldsubscribejpeg.jpg
Advertisment
Newest Members
Mike Damone, Steven Collins, suburban electri, Ratbird, MORiverRat
18,619 Registered Users
Forum Statistics
Forums36
Topics41,169
Posts560,209
Members18,619
Most Online3,612
Jan 10th, 2023
Top Posters
esshup 28,770
ewest 21,558
Cecil Baird1 20,043
Bill Cody 15,222
Who's Online Now
3 members (Fishingadventure, Boondoggle, Snipe), 540 guests, and 543 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Joined: Aug 2009
Posts: 1
C
Fingerling
OP Offline
Fingerling
C
Joined: Aug 2009
Posts: 1
Hi all.
New to these forums. We just got some land with a pond on it. Luckily, the previous owners agreed to still maintain the pond... When we got there today (after about 3 days of heavy rain), almost all the fish in our lake were dead. They put copper sulfate in the pond about 2 weeks ago. Is there anyway that the sulfate or rain would have killed them? They definitely died within the last 3 days, we are sure of that. All help appreciated
[url=]Picture 1[/url]
[url=]Picture 2[/url]
[url=]Picture 3[/url]

Joined: May 2009
Posts: 743
W
Lunker
Offline
Lunker
W
Joined: May 2009
Posts: 743
Copper sulfate is used to kill filamentous algae, which is the slimy green stuff you have growing around the edge of the pond in the second pic. The standard recommendation is, if a pond has a good deal of FA growing, not to treat the entire pond at once because what happened to your pond can be the result. Dying weeds take up oxygen; probably the pond had a lot of FA and the previous owner got a little slap-happy or impatient or just didn't adequately research the application of the chemical. It's a shame too - looks like the pond had some nice-sized bluegill in it.

Joined: Jan 2009
Posts: 10,458
Likes: 2
C
Ambassador
Field Correspondent
Hall of Fame
Lunker
Offline
Ambassador
Field Correspondent
Hall of Fame
Lunker
C
Joined: Jan 2009
Posts: 10,458
Likes: 2
Welcome to the forum Chance9888!

As Walt said, copper sulfate can kill fish either through depletion of dissolved oxygen through the dying filamentous algae it killed or through simple poisoning if used in too high a dosage. How is your pond fed? Spring, run off, etc? The fact that you had a heavy rain a few days ago has me intrigued. Sometimes fish kills can also occur due to outside contaminants washed in during a heavy rain.

Irregardless of how your fish kill occurred, what is done is done. It is a shame none the less though. Now is the time to evaluate what you have left and move on. Many members on here have experienced fish kills and I am sure they will share their experiences of what they did and how to bring your pond back to life.

Best of luck and welcome to the forum again...

Joined: Apr 2002
Posts: 3,348
Likes: 106
Editor, Pond Boss Magazine
Lunker
Offline
Editor, Pond Boss Magazine
Lunker
Joined: Apr 2002
Posts: 3,348
Likes: 106
This fish kill can be summarized as follows:
1) Excess aquatic plants peripherally and heavy plankton bloom in the water column.
2) Someone treated the vegetation, it started to die and decompose, dramatically increasing the BOD (Oxygen demand).
3) The plankton bloom crashed (died) at the same time as the plants were decomposing. The plankton bloom crash was either a result of copper sulfate treatment or it ran its course and was finished off by the heavy rain.
4) The resulting oxygen demand suffocated your fish. You can tell the fish suffocated because many of them have their mouths wide open, jaws locked and gills flared open.
5) The copper sulfate did not directly cause the fish kill. Decaying vegetation caused it. The copper sulfate was the stimulus. It did what it is supposed to do...kill the algae and plankton.
6) There's good news here, though. Your fish kill was probably partial and the pond will recover.


Teach a man to grow fish...
He can teach to catch fish...
Joined: Jul 2006
Posts: 7,615
Likes: 5
J
Ambassador
Field Correspondent
Lunker
Offline
Ambassador
Field Correspondent
Lunker
J
Joined: Jul 2006
Posts: 7,615
Likes: 5
Chance, welcome to Pond Boss, we're glad you found us. I'm sorry it's sad circumstances that let you to post here for the first time. But the good news is that you found the greatest resource for pond management on the blue planet and you've heard from THE pond boss himself in your very first post (very few folks can say that). With this crew you'll be able to get your pond back in order and probably better than it ever was.

If it were my pond I'd begin the rebuilding process by learning all you can about pond management. Bob Lusk has written several great books about pond management including "Perfect Pond Want One?" and "Raising Trophy Bass" which is chock full of information even if you don't want trophy bass. Another book in my library is "Water, Weeds and Algae". These are all available through the Pond Boss Store. Also subscribing to the magazine is a good idea as well and a sign of superior intelligence. \:D


JHAP
~~~~~~~~~~

"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)
Joined: Jul 2006
Posts: 7,615
Likes: 5
J
Ambassador
Field Correspondent
Lunker
Offline
Ambassador
Field Correspondent
Lunker
J
Joined: Jul 2006
Posts: 7,615
Likes: 5
 Originally Posted By: Bob Lusk
You can tell the fish suffocated because many of them have their mouths wide open, jaws locked and gills flared open.


Interesting, I had never heard that before. See there I've already learned one new thing today.


JHAP
~~~~~~~~~~

"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)
Joined: May 2004
Posts: 14,088
Likes: 321
Moderator
Lunker
Offline
Moderator
Lunker
Joined: May 2004
Posts: 14,088
Likes: 321
 Originally Posted By: jeffhasapond
 Originally Posted By: Bob Lusk
You can tell the fish suffocated because many of them have their mouths wide open, jaws locked and gills flared open.

Interesting, I had never heard that before. See there I've already learned one new thing today.

That makes sense. That's the way they always look when I leave them in well water in the fridge overnight before cleaning.


"Live like you'll die tomorrow, but manage your grass like you'll live forever."
-S. M. Stirling
[Linked Image from i.pinimg.com]
Joined: Jul 2006
Posts: 7,615
Likes: 5
J
Ambassador
Field Correspondent
Lunker
Offline
Ambassador
Field Correspondent
Lunker
J
Joined: Jul 2006
Posts: 7,615
Likes: 5
 Originally Posted By: Theo Gallus
That makes sense. That's the way they always look when I leave them in well water in the fridge overnight before cleaning.


No correlation Theo. Your fridge fish look that way because they have suddenly developed an irrational desire to consume large quantities of DMD.


JHAP
~~~~~~~~~~

"My mind is a raging torrent, flooded with rivulets of thought cascading into a waterfall of creative alternatives."
...Hedley Lamarr (that's Hedley not Hedy)
Joined: Aug 2002
Posts: 20,043
Likes: 1
Hall of Fame
Lunker
Offline
Hall of Fame
Lunker
Joined: Aug 2002
Posts: 20,043
Likes: 1
Is it possible there was a turn over due to the heavy rain also? It's pretty hot down there and a heavy rain in the 70's could drastically drop the water temps causing a turn over couldn't it? I.e. 90 degree surface temps and 70 degree heavy rain is a 30 degree drop of temperature and could initiate mixing?

Last edited by Cecil Baird1; 08/23/09 09:51 AM.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.






Joined: Jun 2005
Posts: 2,365
B
Lunker
Offline
Lunker
B
Joined: Jun 2005
Posts: 2,365
Chance,

Welcome to the Pond Boss forum. Sorry about your fish kill. How deep is your pond?

Last edited by bobad; 08/23/09 11:22 AM.
Joined: Apr 2002
Posts: 3,348
Likes: 106
Editor, Pond Boss Magazine
Lunker
Offline
Editor, Pond Boss Magazine
Lunker
Joined: Apr 2002
Posts: 3,348
Likes: 106
Cecil,
Sure, it could. But, with that black water and floating algae mixed with dead plankton ringing the surface, it would take more than just thermal mixing to kill all that greenery. A turnover wouldn't have killed the peripheral plant life.


Teach a man to grow fish...
He can teach to catch fish...
Joined: Mar 2005
Posts: 21,558
Likes: 291
E
Moderator
Hall of Fame 2014
Lunker
Offline
Moderator
Hall of Fame 2014
Lunker
E
Joined: Mar 2005
Posts: 21,558
Likes: 291
I agree with Bob's assessment and Cecil could also be right that the cold rain added to the DO reduction.

However let me add one more to the mix. CuSO4 in low alkalinity water can and does kill fish even in low amounts. The combo acts to inhibit gill function and the fish can't breath. The fish gills work but they can't uptake O2.

http://www.pondboss.com/forums/ubbthread...=true#Post35566

Last edited by ewest; 08/23/09 06:22 PM.















Joined: Aug 2002
Posts: 20,043
Likes: 1
Hall of Fame
Lunker
Offline
Hall of Fame
Lunker
Joined: Aug 2002
Posts: 20,043
Likes: 1
 Originally Posted By: Bob Lusk
Cecil,
Sure, it could. But, with that black water and floating algae mixed with dead plankton ringing the surface, it would take more than just thermal mixing to kill all that greenery. A turnover wouldn't have killed the peripheral plant life.


Oh I wasn't discounting that at all. Just thought since a turn over was not mentioned it could have been one of those all of the above situations. Ewest even added another one that could have been added to all of the above.

Didn't someone here once say that fish kills could be due to more than one factor at once? Was that you Bob?

Last edited by Cecil Baird1; 08/23/09 07:27 PM.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.







Link Copied to Clipboard
Today's Birthdays
4D Ranch, gunsmoke
Recent Posts
Just received my magazine
by Theo Gallus - 07/18/24 09:46 AM
Best weed
by B BUG - 07/18/24 06:41 AM
Optimal vs. Purina
by Boondoggle - 07/17/24 10:42 PM
Running electric or air uphill
by Boondoggle - 07/17/24 08:43 PM
Plant ID Please…
by Bill Cody - 07/17/24 07:57 PM
Alum worked for 3 days now getting cloudy again!
by N.C.PondJoe - 07/17/24 03:21 PM
Weeds Wanted
by Spicelanebass - 07/17/24 02:37 PM
Dropping Lake and want to improve Spawning
by FireIsHot - 07/17/24 07:54 AM
Newbie in east TN
by Steven Collins - 07/17/24 06:15 AM
Need Pond Builder Cooke County TX area
by Greg Mc - 07/16/24 01:04 PM
To aerate, and how to do it?
by Bill Cody - 07/16/24 10:16 AM
Faux trees & plants
by DeerTexas - 07/15/24 10:14 PM
Newly Uploaded Images
Major change since 2009
Major change since 2009
by SENKOSAM, July 3
Fishing with my Best Buddy
Fishing with my Best Buddy
by Theo Gallus, June 29
Eagles Over The Pond Yesterday
Eagles Over The Pond Yesterday
by Tbar, December 10
Deer at Theo's 2023
Deer at Theo's 2023
by Theo Gallus, November 13
Minnow identification
Minnow identification
by Mike Troyer, October 6
Sharing the Food
Sharing the Food
by FishinRod, September 9

� 2014 POND BOSS INC. all rights reserved USA and Worldwide

Powered by UBB.threads™ PHP Forum Software 7.7.5