Re: Diatom = ending of cycle? What's in your tank so far? Diatoms are one of the first algae you see during the cycling process. You then should see green algae and then coralline algae. I've been taught that coralline algae is what's desired and shows that you have started to stablize your tank. At 3 1/2 weeks you are ready to have some scavengers in your tank (the "clean up crews of snails, crabs, etc.). |