Thank you, likewise
Sadly I've been plagued with problems over the last couple of Years and lost most of the SPS.
I'm just in the process of a major revamp at the moment, it's either that or get rid of it and I'm not ready for that quite yet.
@Gromit, yup, it does turn into an obsession, be warned!
No, coloured gravel will not negatively affect your fish in any way. I personally far prefer the natural coloured stuff in a finer grain size, but that's just me.
Freshwater tropical are straightforward and inexpensive, just dump in your tapwater, add some dechlorinating agent, wait for your temperatures to stabilize and off you go.
You have to add fish slowly to let your filter mature, but your LFS will give you all the advice you need
Any problems/questions please feel free to pm me if you wish. I kept various freshwater setups for nearly 20 Years before going marine.