This might be just me but I got the impression there are too many sub-forums under the Aquarium section which makes it a bit confusing.
For example I would like to write a review for the Interpet Fishbox 64L but do I put it under Standard Aquariums or All In One Freshwater aquariums?
I'm concerned that if a buyer is looking to buy a second hand model then it might not come with the usual package so it's not obvious that they need to look under the All In One section to find it.
Another e.g. if I was reviewing a Fluval Edge 23 L, would it go under nano or designer?
I can imagine that the sub forums might be useful if somebody wanted to browse nano aquariums without a specific model in mind but I think most users would more likely be looking for a specific model.