Environmental - Biosecurity, Ecosystems, Predation, Pollutants

If you have chlorine or chloramine treated water, K.O.I. has always recommended the use of a water shut off timer whenever doing a pond refill.  In fact, they are so cheap (and they do sometimes fail, that Spike now recommends using 2 of them, one after the other.

But there is another way that doesn't involve the use of ANY device.  Read what the Fish Vet in Australia recommends.

If you've ever wondered what happens when an otter discovers a Koi pond in a botanical garden, read this story.  The good news is that the aquarium folks jumped in and saved the remaining Koi.

This study evaluates the toxic residual pharmaceuticals in the water as they affect algae, the environment and fish.  The results indicate that there are numerous other external factors that complicate the testing.  An interesting study, not directly related to our Koi, but certainly affecting our water sources.  The list of chemicals they tested for is staggering!

Heavy metals are toxic to fish, including our Koi.  Understanding the effects of heavy metals, and which metals are toxic is useful to Koi keepers.

Attached are 2 studies showing the effects of 2 common pesticides - Cypermethrin and NeemAzal on Koi.

While it is winter here, it is the hottest part of the summer in Australia, and drought combined with high temperatures is killing thousands of fish in the NSW rivers.  What is actually killing the fish?

What do you do with old syringes/needles or scalpels?  Here is excellent advice from Doctors Foster-Smith...

I recently had a question about what to do if your pond is visited by a mink... 

NEW PRODUCT - for those of you that have Chlorine or Chloramines in your water supply.

Herpes virus carp kill in River Murray may sap essential oxygen, research shows.

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