When I lived in L.Hutt I never had any problems with algae apart from the green form and every plant thrived without the addition of nutrients. Since moving to Foxton and until recently, no plants survived more than a few weeks (I use rain water from the tank, Ph neutral to slightly acidic). The worst problem I had was with the black algae which tends to attach itself to the edges of the plant leaves and over rocks. I re-sited the tank to cut down outside light, planted densely and started using a plant nutrient called Aqua Master Plant Food on the assumption that rain water would be mineral defficient. Well I have no problem with plant growth now, they are growing out of the tank and I take cuttings to keep the density up. The problem is the black algae has raised it's ugly head again!! Does anyone know of any product which will kill off this type of algae without affecting the plants or the fish, or is there something lacking in the water? Bearing in mind that this tank, gravel etc. has been disinfected prior to re-siting it's surprising the curse has come back only couple of weeks after. Any suggestions gratefully received!
Regards Gordon