Lonewolfblue
Aquarium Advice Addict
And you don't rinse the eco, just put in the empty tank, then slowly fill. The eco comes in a bag of liquid, that's why it's expensive shipping from most places. Put in the eco, push it around til you get the layout you want, then add water. Your water will stay cloudy for a day, maybe 2, but clears up nicely. And the top of the eco will be dusty for a few weeks, but the dust will settle down deeper into the gravel. So for the first few weeks you might see some of the bottom fish kicking up some dust, but that's ok. Doesn't hurt anything. My gravel is 100% Eco, and I love it. Easy to work with.