Ocean Free Paraclear, anti white poo and bloated bladder

[onnonn]

Hi all,
Newbie here. I have a pair of apistogramma cockatoo, some Endlers, brown Pencilfish and a Betta. Currently feeding them with live tubifex. As some experience friend told me that live tubifex is likely to carry parasites that cause white poo etc.
I bought this thinking it may be handy if my fish get it (touch wood). Can I doze it if the fish is not showing the symptoms to prevent things happened?

[onnonn]

My female apistogramma is like getting skinnier and inactive. Started the treatment today

[onnonn]

It died when I return home yesterday.