bubbles from substrate

[navyav8tr]

I have never seen this before but thought I'd throw the question out. I have seen bubbles, not micro bubbles, come up from my substrate when my lights are on. Any ideas on this one? Chemistry in the tank (amonia, nitrates, nitrites, and ph) are all good.

[kzoo]

normal, sub is converting your nitrites to nitrate gas.:eek2:

[OceanLyons]

Just curious... what type of substrate do you have?

[reefnewbie54321]

if you have a dsb then congrats its working ... that is nitrogen gas escaping towards the surface.

[ek9vboi]

How old is the tank? When I fisrt set up my tank, I had this issue with bubbles on my rocks and sand bed. Since then it has not came back.

[navyav8tr]

My tank is in it's second month. It has run it's cycle and corals seem to be doing well. I used arag alive for a substrate but it's not a DSB.

[jester805]

I have seen this everyone once in a while with my tank too. I have 80 pounds of live sand in my 75 gallon.

[BONDQ]

I have this too.
I have a DSB and I'm in my 3rd week of having the tank up and the rock curing.

My sand is Fiji Pink from Caribsea and I have a nice steady stream of bubbles coming up from the substrate throughout the tank. I have about 3" of very fine 0mm-1mm sand, then I have a 1" layer of 2mm-4mm of the same sand type on top of that.

Will these bubbles continue forever or are they something that only occurs during the initial establishment of the bacteria in the DSB?

[Airman]

Kzoo is correct in saying, "normal, sub is converting your nitrites to nitrate gas." You might notice bubbles next to the glass. These might be oxygen from alage.

[BONDQ]

My tank is still cycling, but the bubbles look like slow rain going up instead of down.

They are fairly consistent and good size bubbles, not micro-bubbles.

They are coming from all over the tank, and at a steady pace.

It's neat to see the biological filteration visually establishing itself.