Thanks for your reply, very helpful, but I may have some more questions...!
Hang On Back? It's not something I'm familiar with, and I don't think I would have the space, due to the tank being against the wall.
I was planning on siliconing perspex at one end or corner of the tank to create a space where I can place powerhead, heater etc - would this work in place of HOB
? I would probably also do a smaller one at the other end to enable two powerheads to be used.
Do you think I would be better to set up the tank with live rock and sand, get the powerheads working and then see what else I needed?
In my small marine I currently have a mini external - not the best for marine I know - but this has been working really well so far (tank has been running for just under a year) with just the standard ceramic noodles and filter sponge. This was before I really started to look into it properly so with an upgrade just want to make sure I get it right!
Am I right in thinking a protein skimmer needs to be outside the tank - or at least part of it - as well?
Sorry for all the questions!