Gas Buildup

[salty rick]

Last a week and a half ago I added a 4.5 inch DSB. Last night I noticed at the bottom next to the glass a discoloration. When I ran a stick down through the sand to the discoloration gas bubbles came out. Why is this?
When I converted to the DSB I took out a plenum and left in about one inch of agronite sand. I put the dead sand on top. I did not mix it up. My parameters are:
PH: 8.2
Calcium: 420
Ammonia:0
Nitrite:0
Nitrate:20
Phospahte:.25
I ran out of my ALK test so I don't know what that is but I haven't had to add anything to keep my PH up so I think it is okay. I have a 55 with a canister filter, three powerheads and a Seaclone Skimmer.
Thanks

 

[nacl-h2o]

The bubbles are the Nitrogen your DSB converted from nitrates. There suppose to be there it means your DSB is working properly.

 

[nacl-h2o]

I just noticed your from Greensboro. Thats where I was born and I lived in and around there until I was 25. I liked that area better than the area I live now. (job moved me)Hope you enjoy the area there are at least a couple of decent LFS's up there theres no one good around here any more.

 

[10k]

Hey Rick. I'm right down the street from you in the bustling city of Lexington...lol. Glad to see more poeple from around here. Thought I was alone.

 

[jakepilot]

nitrogen my friend, roughly 78% of the air we breath...that is a good sign

 

[salty rick]

Thanks for all the info. I am glad the DSB is working.
NACL-H2O, There are a couple of good LFS. I frequent Aquamain the most although I have shopped some at The Aquarium Shop as well.
10K - I too am glad to hear of others in my area of NC.