Thanks Mark, can't wait to get stuck in later

I thought the walls of the tank would have been covered, but this is good.
Quick question about sump pumps, found one on ebay. Does it matter what the output is or can it just be what I want? Ive found one that goes up to 8500l/h so that would be over x10 the volume of the tank which is what I wanted.
Im sure this can be explained later by pics of the pipe work but Mart had an output into the tank which was one long pipe with 3 pipes coming off it. This would run half way down the tank and was at the bottom to go up through the live rock, but I was thinking of altering it and increasing the number of output pipes to 4/5 and extend it the entire way down the tank or at least 4.5ft and have it above the water surface rather than at the bottom. The pipe ends would have holes and then be covered by sponges of some sort. The output pipes would lie horizontal to the water surface, with the main connecting pipe pushed up under the back lip of the tank.
This pic probably explains it better... is this a stubid idea or could it work. I want water output all over the tank (without the help of the powerheads).
Thankies
The circle is the input to the sump, the pipe coming out the other side is the output.
Hope this makes sense!!
Ashleigh