The Skeptical Aquarist

Hygrophila, the "water lover" as its name asserts, is another of the aquarist's essential plants, highly adaptible to acidic or alkaline pH values, tolerant of very moderate lighting, and prone to produce side shoots from the axils of its leaves, which will quickly give a satisfactory bushy planting.

Increasing water circulation in the tank often seems to have some effect in repressing cyanobacteria. Are cyanobacteria sensitive to their own metabolic wastes, including oxygen?

"Shark-minnows" Crossocheilus, Epalzeorhynchos and Gyrinocheilus ...and Tanichthys, the White Cloud Mountain Minnow.

Günther Sterba's Aquarium Care: a comprehensive guide (1967): my copy is battered from many readings and water-stained. For me, it was an eye-opening entry into the science of the natural aquarium.

Rasbora borapetensis (Red-tailed or Black-line Rasbora) from Thailand and Malaya and the Mekong basin is a peaceful shoaling fish that's been an aquarium fish since the 1950s.

Several species of Cryptocoryne have been standard plants for the aquarium for the best part of a century. Cryptocorynes will do best for you if your water is soft and your pH hovers below 7.