Everything dead in pond...DEET, Round Up and or what?


Joined
Aug 20, 2016
Messages
2
Reaction score
0
Country
Hi all,

I have a 70 gallon pond and I've been loving watching the tadpoles and guppies hatch and grow in it since May. We have TONS of tree frogs from the tadpoles I put in the pond last year and all was well all summer. I have a couple bowls in the house with tadpoles in them, too, so my kids can watch them develop.

I went to scoop some fish and guppies out of the pond two days ago and all of them were dead. I had a HUGE population and was going to remove about half of them and donate them to my daughter's school...but no, nothing left. So I checked the bowls inside of the house and half the tadpoles were dead and the rest dying. Then realized, the night before I had taken plants from the pond and added them to my bowls in the house. The plants must have transferred something toxic.

Here is what could possibly have gotten into the pond. It would have been such a low concentration, though. Last week 2 different weed killers were sprayed in my flowerbeds that are about 50 feet from the pond. Last month bifferin insecticide was sprayed a couple feet from the pond. I work on the pond with DEET on my arms, but I'm pretty careful not to spray near my hands or forearms. I suppose any of these could have done it, but how weird that it transferred to my bowls via the plants. Any ideas?

Now what do I do to make the water safe again? I drained most of the water and refilled it today & added dechlorinator. Then added 6 feeder fish to see if they'd die. I bet those fish are tougher than tadpoles, though. Do I need to completely drain the pond and clean it so tadpoles will thrive in it? Oh, and there are brand new eggs in the pond this afternoon. FYI, the snails survived and the plants are very healthy looking. We have water lettuce and hyacinth in there.

Thanks for reading my long post!
 

Meyer Jordan

Tadpole
Joined
Oct 10, 2014
Messages
7,177
Reaction score
5,645
Location
Pensacola, Florida
Hardiness Zone
9a
Country
It may have been insecticide related or it could have been something else entirely. Small outside life-supporting water features often maintain a fragile balance both chemically and biologically. It could have been just too many tadpoles.
 
Ad

Advertisements

Joined
Aug 20, 2016
Messages
2
Reaction score
0
Country
Good to know. Next time I have a huge batch of eggs like that I'll remove them before they hatch. I have a feeling overpopulation might have caused some type of bacteria to grow. Weird that it transferred to the bowls inside on the plants, but I guess they could have been carrying it.
 

Mmathis

TurtleMommy
Joined
Apr 28, 2011
Messages
9,803
Reaction score
5,615
Location
NW Louisiana -- zone 8b
Hardiness Zone
8b
Country
Hello, and sorry to hear about losing the critters. From my experience with tadpoles is that they are very sensitive to their environment, so anything from inadequate filtration to overcrowding can be an issue, as @Meyer Jordan said.
 
Joined
Jun 11, 2012
Messages
6,987
Reaction score
7,097
Location
Water Valley, Alberta
Hardiness Zone
2a
Country
In case it was from fatal exposure from an insecticide, you could try running a small pressurised filter containing activated carbon.
That will help remove many different contaminants.
 
Ad

Advertisements


Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top