Dry base rock From Marco Rocks Question.

[ChiTownRomeo]

Hey guys I pulled some Dry Marco Rock from a old tank ( It was in the tank for 4 months) and left it out when I got sick. It has some green algae still on it and scrubbing wont take it off. Think it's ok to use? Don't wanna cause a mini Cycle.

 

[johnsonw2]

I use marco base rock in my tank as well. When I received my order it was more than I expected so left a few pieces out of the tank. Few months later I added a piece of the base rock and it turned the same color green as that in a day. The rock has been in my tank for 4-5 months since it turned green and is still the same. I know this probably wont help you much but it doesn't seem to be a problem in my tank.

 

[ChiTownRomeo]

I use marco base rock in my tank as well. When I received my order it was more than I expected so left a few pieces out of the tank. Few months later I added a piece of the base rock and it turned the same color green as that in a day. The rock has been in my tank for 4-5 months since it turned green and is still the same. I know this probably wont help you much but it doesn't seem to be a problem in my tank.

Ok Imma let mine soak for a week and see.