Making my rocks green while keeping my tank clean


Lifetime Members
Lifetime Member
Jan 29, 2005
Tom, I know you've done a lot of work with inducing algae and isolating the environmental factors that promote specific algae growth. We usually benefit form this by being told what to look out for, ie avoid.

In my case, I want to induce an algae and keep it as confined to an area as possible. I've seen Amano aquascapes that used stone and the stone had a nice green patina on it, although the rest of the tank appeared algae free. I'd like to add that clean green look to this:


I want to give it the appearance of an overgrown mountain from a very long distance off. I'd also like to preserve the porous surface as much as possible to give it detail in its features.

Is this possible without being detrimental? If so, how? Is inducing algae the wrong way to approach my needs? If so, what might work better?

Thanks for any help.

Tom Barr

Staff member
Jan 23, 2005
Re: Making my rocks green while keeping my tank clean

That is just normal patina formation over time, give it a few months and it should be fine.
Do not induce the algae because you will have much more than you want:)

Tom Barr