This may not be the right forum but... I recently got BWCW and the ad copy says it'll do 15-20 gallons of water. When I opened the package judging from the instructions I'd say I have enough to do maybe ten at most. I got this on ebay & I'm wondering from someone who owns it if it seemed that way to you as well.

Also any other tips on it's use (not the effect or patter) are appreciated (for example I'm guessing water with fewer impurities makes things go better...what about temp, "introduction" etc.....

If anyone has this please PM me...I've got the black water worked out but it's still only coming back to yellowish..I don't want to give further details in the open forum but I'd love to use this properly.