I added it straight when I cleaned my 38's tank. After sloshing it around for about 5 minutes I poured in two gallons of strong soda water to kill the acid before dumping it out. Worked great but do it with a lot of fresh air, the fumes can kill. eek Wear old clothes and chemical resistant gloves. A drop of it'll eat holes in fabric and skin.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.