Thanks guys! I really didn't want this tank to look cramped like a lot of pico and nano reefs seem to end up like so I took out some live rock and I've been trying to keep the sand bed free.
There's nothing wrong with the nems position. The problem will be when it gets larger, I'll have to either sell it or get a bigger tank. It will end up bigger than this tank. Hopefully that won't be for a while though!