Algae Growth

[gobytron]

I am sure there is some scientific reason why that would happen, which you could blame, rather than your rock.

I have rocks that even after drying completely and cooking for a year or so, will STILL grow algae right away.

Some rocks seem to store phosphates (or whatever) considerably better than others.

At least in very anecdotal observation.

[brisco]

and some hair algae seems to have rocks attached. lol.

[gobytron]

Originally Posted by brisco

and some hair algae seems to have rocks attached. lol.

lol.

no joke.

[ClubReef]

For last resort, try API - Alagefix Marine. You can buy it on amazon.com and they will ship to canada.