Aquafreak;2666786; said:
Don't ever use a pool filter if it was previous used in a pool! While I have never heard of someone using it for a fish tank, I have been asked many times if people could use them on a pond. I used to design and install ornamental ponds and I have seen tens of thousands of dollars of koi and goldfish wiped out by residual chlorine, every time. You'll find some claims that people have done it, but I have honestly NEVER talked to a person who successfully did it. My 2 cents...
That's 'cause you've never talked to me

, I've used several used cartridge filter cases (new cartridge of course) after cleaning & testing (
NO residual chlorine). These units were years old and from pools and spa's. Units were run for 1-5yrs on 50g to 20000g systems.
I understand you wanting to express your concerns but you did say "
Don't ever use a pool filter if it was previous used in a pool" .
To see "tens of thousands of dollars of koi and goldfish wiped out by residual chlorine" would be a tragedy, how were you involved in this mishap? And I don't understand the reference " every time"? Were you involved in more than one instance? I'm the curious type, perhaps other could learn from this.
pm0084, sorry for a slight derailment but this may be of value to you too.
The largest problem is the pressure the filters need to work properly, as the filter gets dirty (these cartridges are meant to remove most everything from the water so this happens quickly) it takes more pressure to force water thru them (obviously). So if you don't mind cleaning a little more often, especially with an underrated pump, it's a good choice for a mechanical filter.
Clean well, soak in water for a few days and test the water for chlorine content, if you find
any start over (hot water helps).
Dr Joe
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