Your Hair Algae Problem
Hello tm...
If a tank stays up and running long enough, it will develope algae. It's natural and not really a bad thing if controlled. The best thing I think you can do to control it is plant more plants. Algae thrives on excess nutrients in the water. If you plant some stem plants that get the bulk of their food from the water, then they will compete with the algae for the available food. I have Water Wisteria, Ludwigia, Rotala and Pennywort in some of my tanks and have no algae problems.
You can also dose a little of Seachem's Flourish Excel. It has a trace of carbon called "Gluteraldehyde". This carbon fert is good for most of the complex tropicals, but is toxic to algae. You need to be careful dosing it and follow the directions. Ferns, mosses and some varieties of Vallisneria are also very sensative to this carbon fert.
B