Coralline on sand?

[dpotts]

Does Corralline grow on the sand bed? I have this purple layer of "stuff" growing on my sandbed. On Monday I vaccumed it up and today it's back. Good or bad?

[RayAllen]

Its called Cyno bacteria and its not a good thing, but is common.

[Texreefer]

sounds like a cyano bloom = not so good.

[rabadanmarco]

is it purple or brown....if its brown thick algea most likley its diatom algae...

if its Cyno bacteria it mostly feeds of phosphates...so maybe use a filter media that can remove phosphates
and diatom aglae...feeds of silicates... sometimes if you buy cheap salt it has traces of silicon...wich is used to remove moisture from packaging....

i never use tap water....this may sound crazy but i literaly bought about 50 gallons of R.O water from walmart...and lugged it back to my house....and ive never had any of these problems........

[dpotts]

I buy my water from a LFS so it shouldn't be the water. What else can I do to get rid of it?

[wwarriner]

Honestly...nothing other than water changes. Just keep vacuuming it off your sand bed and it will eventually pass. We all had to go through an algae bloom on our tanks.

[dpotts]

That su@!s!!! I do a 10% water change every monday...would that be frequent enough?

[Captain Jack]

Increasing the water flow in the areas where cyno is growing can stop or slow it down.

[Ping]

Regardless of the source of our water, it needs to be tested to ensure quality. Quality can not be assumed from any source.

[dpotts]

I test my water every week and all the levels are great.

[johnmaloney @ Reef Cleaners]

increase water flow, reduce phosphates, get clean up crews members to eat it.

[dpotts]

That was my next question...can my CUC eat it? The reason I ask this is, this morning it was all gone!! I know it will probably be back by this evening but that's weird that it disappears over night! :hypnotyized:

[Dee]

it went away at night because the lights were off. Sometimes it's just a faze and there's not much you can do aside from maintaining it until your tank stabalizes itself. I never had any, then moved and coudln't get it to go away. It's slowly going away though.

Dee

[Submariner]

I'ved used chemi clean before with great results. Didn't harm anything else in my tank.