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Thu, Jul 8, 10 at 16:07
| I have a small (10 gallon) wildlife pond and the dragonflies visit it frequently. When I was cleaning it out this morning I noticed a number of dead dragonfly nymphs. There were still some live ones in there though. To clean tje pond, I usually just empty out most of the water and refill it with the garden hose. Could the chemicals in my city's water be killing off the dragonfly larvae? Do I need to use a chlorine remover just like I would if fish were in the pond? |
Follow-Up Postings:
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| According to this link, city water will kill dragonfly larva. But I have seen mosquito larva in swimming pools before, which have much more chlorine in them than city water. So it's hard to say. Are you sure they were the actual nymphs you saw and not just the empty shells they leave behind when they morph? |
Here is a link that might be useful: larvea guide
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- Posted by pondmaninal 7b (My Page) on Thu, Jul 8, 10 at 22:22
| Were they dragonfly nymphs or just the empty shells? |
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| I don't think the dead larvae I saw were the shells - they were very small and usually the nymphs crawl out of the water and attach themselves to plants when emerging. I think I'll buy some declorinator for aquariums and err on the side of caution from now on. I'm in Texas (DFW) so they might have been killed off by the heat. It hits 100 pretty often here. |
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