Essentially Algae Free Tanks
Had algae problems in these two 55 G tanks about a year ago. To control the algae, I decided to put a potted aquatic plant into the tank every month or so. The more complex plants used up the added nutrients in the water and today, the algae is limited to a small bit on a couple of the older plants.
The pots have small holes in the bottom to allow for the roots to grow and contain a layer of pea gravel, then a layer of organic potting soil, covered by a layer of the pea gravel.
The tanks both have one T5, 32 watt bulb, less than one watt of light per gallon of tank size, just enough for the Java fern, varieties of Amazon swords, Water Wisteria, Peace lily, Cryptocoryne and a couple of others I can't recall. Plus a hundred or so Fancy Guppies and some Corydoras.
Tanks aren't pretty, but I found out adding plants to the tank will eventually take care of an algae problem.