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Unread 10/31/2014, 04:32 PM   #1
Yellow Eyes
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Join Date: Sep 2014
Location: Glen Burnie, MD
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Bubbles on Sand And Rock, 2 month old tank

So I wasn't going to worry about this, but then during when my fish were being fed, a funny thing occured. I have a few bubbles of different sizes on my sandbed, against the glass specifically, and on my rock. One of these bubbles rose to the surface, but stuck to it was a clump of sand that was funny enough the size of the pellets being fed. My one (only) fish tried for it, but realized it wasn't food. The bubble made it to the surface, popped and dropped its load.

I did a little research and some people say its attributed to algae growth. I do have some cyano or brown hair algae, I can't tell for sure, and I am going to vacuum it up soon with my water change (I posted a picture below just in case I'm being too newbie about it someone can warn me). However none of the bubbles are near any (that I can see) algae blooms.

My tank is two months old so I would assume that any air trapped would have made its way out. There are no microbubbles in the tank. Maybe its nitrogen gas, did I pick up a miracle bag of live sand?? My nitrates are at 0....

But any help would be appreciated on what these might be, if they will get worse, safe for fish or coral, anything. Thanks!




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Current Tank Info: 40 Gallon with Herbie overflow, 29 gallon sump with Cheato, Ecotech MP10wQD, Kessil A360WE, AquaC EV120, BRS 2 Part Dosing
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Unread 10/31/2014, 06:06 PM   #2
Eric Boerner
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Location: Seattle, WA
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Two things.

You have a 'slight' amount of cyano in the first pic. Totally natural for 2 months. It'll gas bubbles as it increases. It will pass in time.

Bubbles coming up from the sand is air gassing up as the lower sand becomes anaerobic. This also is normal for a newer tank. It will pass in time too.


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Current Tank Info: 225 gallon SPS
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