Hi, Thank you for picking up the powder!!! I think it is much easier to broadcast in a nano tank. I would suggest turning off you return pump so it all doesn't end up in your sump. Yes, the powder is also good for LPS. The main reason why people prefer to use the pellets for LPS is that most LPS corals close up to eat so they obviously cannot consume as much of the powder as the pellets. Thank you, again!