02-11-2008, 03:54 PM
Join Date: Oct 2007
Location: Ohio, USA
| | Re: Alder cones
Hi. I haven't heard of Alder cones, so I'm not sure. I have heard of people using barley straw successfully. I have also heard of people using a willow branch. Both of these have to be removed after they do the job. Not sure if this helps, but if you are looking for a natural alternative...
also, in the book Ecology of the Planted Aquarium: A Practical Manual and Scientific Treatise for the Home Aquarist by Diana Walstad, the author mentions several ways to give your plants the advantage so they can out-compete algae. Mainly emergent growth and floating plants. Plants that can use surface air get CO2 from it, and grow much faster, starving off the algae.