PolyFilter- Used in dialysis machine

The best mechanical filter money can buy. A usual this is a product not for the small timer. yes i am talking student hobbyist, stingy old man and irresponsible people who keep fish thinking all they need is a bucket and air stone. As for the rest of you serious hobbyist with deep pocket, this is the filter to go. stop being a cheapo and buy that $6 green filter pad and cutting it into whatever shape you want to fit your filter. if you need to cut, cut poly filter. same technology is used in dialysis machine so you know this is serious stuff. it is not just simple cotton wool. in fact it is not cotton at all.

This filter have the amazing ability to filter out chemicals, metals, organ phosphate, chlorine, heavy wastes and so on. the best part is, it will change colour according to the stuff it had filtered out. so you know what you have in your water that is making your ecosystem not functioning. heavy metals in tap water, fish medication such as coppersafe remain despite water change, residual chlorine. i use this filter once a month to ensure all the problematic stuff are filtered out.

Not for the budget hobbyist, a small piece cost $12, a Five feet tank will need $140 worth. you can special order bigger size from good aquaria shop. cost $100 and up.