Why is it that spot algae on Anubias species is common but not often seen on Java (Microsorium pteroptus) ferns?
Why do Anubias leaves seem to attract this type of algae? Is it only because Anubias leaves tend to be oriented horizontally to catch the most light? while Java fern leaves tend to present an oblique angle towards the light source?
Or could it be that the water chemistry around the Anubias leaves tends to be more encouraging for that type of algae, for whatever reason.
A final question: I have read many accounts of what to do to avoid spot algae on Anubias, most state:
- place in low light location
- place in higher flow area of aquarium
- increase PO4 dosing relative to NO3
- make sure CO2 is constant and high
The question is, when one has an Anubias with spot algae, what methods can be used to remove the algae? For example is dipping a possibility? I have some plants growing on rocks and can remove the rocks for treatment. Niko mentioned a while back that he noticed that Anubias which emerged during water changes (were in the air) tended not to develop algae (like the aquarium glass does not develop algae in the area exposed to air during a water change). I suppose one way might be to expose the plant to air for a while and then put it back in the aquarium.
On APD Giancarlo mentioned his universal elixir otherwise known as H2O2 (hydrogen peroxide) helped with this problem. Giancarlo's post on APD
Was there also an article on APD about the use of phosphoric acid to remove algae from Anubias?
Any other suggestions?