Coraline growing on sand

[DwightKeenan]

What can I do to stop this or prevent it?

I have a 30 gallon cube with T5 lighting, fish and corals. I dose two part daily and kalk in my topp off water.

Thanks

[David Grigor]

To me this is a good thing. Good coraline algae growth are good indicators that phosphates are low and ALK/CA levels are good.

Just stir it up a bit, preferably during a water change while siphoning out the gunk in the sandbed........

[civil]

And this is bad how? Most of us strive to have good coraline growth, it is a sign of a healthy tank.

[DwightKeenan]

Well then I guess I won't complain. :lol_hitting:

Never did this on my other tank, but wasn't dosing two part either.

[storrisch]

purple and pink sand would def. be interesting

[droinablunt]

purple and pink sand would def. be interesting

yes it would!

[DwightKeenan]

Well I will try and get a good picture and post it. It is showing pink, that is for sure. It will just be a matter of time before it shows purple too.