Join Date: Aug 2003
Location: Bristol, England
Hairy algae is difficult. I have found that with the plants in my aquarium that have got infested with it, although I've TRIED just pulling it off manually, it always grows back. I find it's worse on plants that are dying. Was the Cabomba you bought kept in good conditions? Good, clean water and appropriate amounts of light? If not, it was probably on its way out already thus giving the hair algae a chance to get a good hold. I don't know what to suggest. Hopefully someone else reading this will be able to offer more advice.
I used to have Cabomba in my tank, but my lighting has always been insufficient (only 60w when I need 120w). Cabomba used to grow OK for a while, but eventually the hair algae took over. Despite pinching out the ends with the algae on them, totally removing the affected parts of the plant, it always grew back. Eventually I had to remove it all from the tank. Hopefully you'll have better luck.
4ft tank - Keyhole Cichlids, Marbelled Hatchets, Corys (trilineatus, sterbai, albino sterbai), Brochis Splendens, Emporer Tetras, Golden Pencilfish, Glowlights, Rummynoses, Ottocinclus, Endlers Livebearers, Amano Shrimp (4x 30w Aqua-glo & Power-glo, laterite under sand substrate, Eheim Ecco 2236 and Fluval 4 plus filter)
2ft - Apistogramma Panduro, C139 corys
2.5ft - Breeding colony Zebra Plecs