Thunderbird84 wrote:

Sitting here rereading my post, I realized I left part of what I wanted to
ask out. When you do the water change, say 400 gallons, do you put 400
gallons into the pond and than mix in the dechlor, or do you do it a little
at a time?


Some water has a lot of chlorine, some water has a lot of chloramine and some
water has lesser amounts...so it depends. If your pond is 4000 gal and you
replace 400 gal with water that has low levels of chlorine or chloramine then
you can probably get away without using dechlor.

If you have a 1000 gal pond and you replace 400 gal water with high levels of
chlorine or chloramine then you will need dechlor. In addition you should add
water slowly as drastic changes in temperature or PH can shock your ponds
inhabitants.

I mix the dechlor and water in a clean trash can and then add it to the pond.
If you add the dechlor to the pond first you run the risk of the dechlor
reacting with the organic matter or other in the pond rendering it less
effective on the chlorine/chloramine. I am not a chemist and this is just an
educated guess.

Zeuspaul