What a great post. It has always been a dream of mine to try this. Unfortunately, that's not going to happen anymore because of other choices I've made. You describe everything very clearly and legibly, and also honestly. This isn't something you just add. A sea aquarium requires attention and perseverance.
It is a wonderful expensive hobby, we will start with a new bin in 3 months, this time choosing 2 meters, at 65 by 65. 900 litre marine aquarium. The eye-catcher in our new home, can't wait for it to arrive