Purple coating on rocks.

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SlipperyFishy

Aquarium Advice Newbie
Joined
Apr 5, 2016
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6
I've had tank for a week now. The only thing that's changed was the salt and the PH. No ammonia no trites or trates

There is purple on the rocks as it is all live excluding the fake piece in the middle. I don't have lights yet, however I do have a heater and a powerhead.

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Purple means cyano. Cyano means poor circulation and nutrients in the water column. Pretty common to see when a system is getting up and running as those nutrients are fueling your cycle.


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Purple means cyano. Cyano means poor circulation and nutrients in the water column. Pretty common to see when a system is getting up and running as those nutrients are fueling your cycle.


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Cool thanks. I got the live rock from a local pet store. Had the purple stuff on it when I got it.

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It's just where the holes r on the rocks. Not covered.

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It's probably just old coralline algae.


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