Hi everyone, 
 
Thanks for all the info it is very much appreciated.  I had a 3ft tank many years ago, it had undergravel glass filters and worked really well with water cahnges once a week.  I had 6 Discus in that tank. 
Unfortuately when I moved from that house I was unable to take it with me  I am really in the newbie stage as that was many years ago and things have changed so much.   :-?  
 
We have decided to go with the African's after all and I have 10 E. Yellows arriving soon and kindly being looked after until my tank is ready.  
I will look at getting E. Blues also and see what other fish that may be suitable. 
 
I will get a different filter system then, what type would suit my size tank & fish? 
Can I plant out the tank or not, would Africans dig them all up? 
 
Thanks again everyone.