I believe its called Crystal Glass Gravel - I believe you put 1 lb for every gallon of water? or 2lbs for ever gallon of water? Does it say on your bag, before I order. I have a 3 gallon tank.
Also, what color did you order?
Yep, that's the stuff I ordered a 2 kilo bag and had some left over. My tank is 25cm x 25cm and 15 litres which I believe is around the 4 gallon mark. I know the conversions are a nightmare so hope that info helps.
Here is one of my 10 gallons, waiting, longing, for a betta to inhabit it. It currently has a panda corydora, 3 threadfin rainbows, and an albino bristlenose plecostomus (clasping to the treasure chest in the right rear). My betta of 3 years (and 2 states- traveled from CO to NY with me when I moved) that I adopted from a life in a vase off craigslist passed away about a month ago. If any of you have bettas up for adoption or know of a reputable breeder, please let me know! I am on aquabid daily.
PS the tank looks cloudy because I just did a water change and redecoration. Bottom is black sand and gravel mix. I was going for a simplistic look...