I agree, I have used for years "Magna-Drive" (magnetic driven) Supreme
Pumps for years. I have one that has had continual use since 1996 and have
only had to replace the impeller once. Thanks Mike
"Mickey" wrote in message
...
I am not sure what model of pump you have. The majority of pool pumps are
electricity very inefficient as you have found out. Look at a pump such as
this one for a replacement that should pay for itself in electricity.

http://www.mdminc.com/Sequence_750.htm

As for the green water it most likely did not kill you fish. Take the
water
to a local pet store and ask about getting it checked. Maybe the place you
bought the Koi from. Let us know the results of the water test and we can
help more. There are several things that can be checked including pH,
ammonia, nitrate and nitrite.



"matt clark" wrote in message
om...
Hello to all ponding experts. I would appreciate a few of you taking
the time to post a reply to the following question. I am in dire need
of help.

My setup consists of a 2200 gallon concrete lined pond with a hayward
1.5 hp pool pump which pumps at about 90 gpm and it has a filter
basket, and a hayward s180t sand filter, which has a flow rate of
about 35 gpm. My pond has a water fall and a bottom drain. When i
first filled the pond everything was good for about 3 months, then it
started getting green. The initial media for the filter was silica
sand. But after a few months i had to backwash everyother day. So then
i switched to lava rocks. They worked ok for about a month and then
started clogging up just as fast as the sand. I have some plants in
the pond, but the sand filter is about the only filter i have on the
system. I wouldnt mind flushing the filter if at least the water
stayed clear. I live in Tucson AZ, where it gets pretty hot and sunny.
My backyard is new so i dont have a lot of shade. i planted trees, but
they just dont seem to grow fats enough. I had a total of 4 koi to
start with, but 2 have died off, and im pretty sure it has something
to do with the green water. I am looking to find a home for these 2
fish if anyone in the tucson area is interested. ohh yes, also my
electricity bills are way too high because of running the pool pump
24/7.
So with all of my pond problems listed, i would greatly
appreciate some help. I have been looking to buy a moderate priced
filter and pump system, or maybe build one myself. If anyone has any
ideas on how to modify my current setup, or media types for the filter
i could use all the help i can get. Or if anyone has suggestions as
for what to but to fix my problem. I also forgot to mention that i did
try the liquid pond cleaner bacteria and had no luck.

I really will appreciate any advice. Thanks for the help in advance.

Matt Clark