Another magazine

Pratical fishkeeping is a british (paper) aquarium magazine.
It's site is, at least, full of articles, and news on fishes and aquarium world.

Connected to site are also a blog and a forum...

Caudata Culture

Caudata Culture site is not about aquariums but about salamanders...


... inside it there is a page that may be very useful because it shows, with goot photos, some aquariums critters. It's a good tool to have by hand...

The AquaTools

The AquaTools web site is a collection of useful web applications that are all related to aquarium but are in no way connected to each other.


The more complex one is aquasketcher, a useful tool for creating drafts aquascapes.
The (probably) most useful is The Aquarium Diagnoser: an interactive guide to diagnose your aquarium plants problems.

It's really a link to keep highlighted.

i3 [AQUA]

Minimalism, design, professional approach, advanced concepts are the basis of aquascaping site i3 [AQUA].



Unfortunately, despite the excellent approach, updates are not frequent so we should wait before deciding how to evaluate it.
I find amazing the pdf booklet about iwagumi ...

ukaps

UK aquatic plants society promotes plantaquariums' hobby in UK through a website and a forum and between the promoters there is the famous aquascaper George Farmer.
The site contains some good articles but, unfortunately, since some time no one has been added ....