Brown Algae on sand bed - new tank

reefraz

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Hi

I have set up a new tank (cade pro reef s2 1800), and currently nearing the end of a cycle. It has been a little over 8 weeks since the cycle started

I used dr tims, but had ammonia skyrocket, after 5 weeks I added some fish, and currently have 4 Barrier reef chromis, 2 clowns, melanarus wrasse & blue spot blenny

3 water changes have occurred in this time as well.

two days ago I added my first coral (small GSP frag) and that has convinced with this brown algae growth on the sand bed and rock surface.

<a href="https://ibb.co/VDhtb21"><img src="https://i.ibb.co/xGcDwJk/IMG-8826.png" alt="IMG-8826" border="0"></a>

I want to ask if this is something I need to urgently deal with, and if so what should I do. I am unsure if they are diatoms or not.

For context, all water is RODI water, the meter running at 0 TDSI.

Nitrites are 0.4, Nirates 5, Phos 0, ammonia 0, ph hovers between 8-8.1 and salinity is at 34.5

Thanks for the help
 
Maxout

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It is mostly diatoms. Your tank will go through many stages of uglies...be prepared for ugly sights. Just do your weekly water changes. Make sure your Nitrates don't go below 1-2. If you are using API test kit, I suggest buy a better kit like Salifert or Red Sea. Wait a few months before buying any more corals. The tank is still new. The GSP will be fine
 
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reefraz

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It is mostly diatoms. Your tank will go through many stages of uglies...be prepared for ugly sights. Just do your weekly water changes. Make sure your Nitrates don't go below 1-2. If you are using API test kit, I suggest buy a better kit like Salifert or Red Sea. Wait a few months before buying any more corals. The tank is still new. The GSP will be fine
thanks

Been using either Red Sea or Hanna Tests.

I am also running a tune 3182 algae reactor. Would you recommend keeping that going?
 
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reefraz

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Running the algae reactor is ok. How old is the tank? Did your nitrites ever go to 0 and which test kit are you using? What test kit are you using for Phos? You don't want that number at 0
Nitrites are yet to go to zero, using the Red Sea tests for that

used the Hanna one for phos and it is stating zero, might try a Red Sea one as well though
 
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