Phosphate reducer filter pad

[Rp8]

Are phosphate reducer pads safe & effective? I've heard mixed reviews. Any experience with these?

 

[vetteguy53081]

I use PhosPure pad by fosters and smith in my drop off tank and works well

 

[proxy001]

I tried. brigthwell Phosphate E, much easier

 

[Rp8]

So do they need replacing periodically?