Fishkeeping Finatic98

I've been in the hobby now for around 7years with tropical fish and 1 with saltwater I'm from the UK and I'm currently working in an aquarium store I have 3 aquariums 
350L marine tank custom made
100L Angelfish community tank 
91L marine tank 
I will have guides on everything aquatic and some top 5 videos to help you new hobbiests just getting into the fishkeeping hobby. 

I'd love to know what you guys think and give me advice on how to advance in the marine hobby