Potassium permanganate in crystal form

[sithspawn]

Anyone know where to buy potassium permanganate in crystal salt form. Pharmacy sells the liquid form for cuts and wounds which may not be suitable for aquarium use. I'm gonna use it to sterilise my tank before setting it up. Thanks.

[illumnae]

pharmacy sells crystals too, but more expensive. i've seen in guardian

[taygu]

I bought a bottle from one of those chinese medical hall and Guardian also has it. A bottle can last you for a very very very long time.