flocculants with Cartridges

Flocculant must be vacuumed to waste. It will clog and potentially destroy all forms of filter media.

Flocculant is one item that should not be used unless you have the appropriate surface equipment and knowledge how to deal with it. And most times, it plain just does not work and makes the situation far worse.
 
Flocculants are discouraged with ALL filter medium.

The circumstances where floc actually fixes something that won't fix itself with a little patience are extremely rare. If it works perfectly it shortens the clearing time slightly. If it fails, you can be dealing with huge consequences in both time and money. Not to mention it can mask ongoing issues that otherwise would have been properly fixed.

But to directly answer your question, I have seen that floc is almost never entirely removed from the water after vacuuming to waste and causes cartridges to become almost useless. Sand filters can more readily recover from a proper floc treatment, but long-term it will ruin those too.
 
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