rescuediver
New member
I have a 75g with 30g sump, its been set up for about 3months, its been thru its cycle, Im coming to the end of a diatom alge bloom now. Up until 5 days ago I had POOR lighting that I replaced with 2 175w MH. I noticed alot of bubbles in the display tank the other day so I shut off all pumps and skimmer and found that my sand bed has alot of small bubbles coming out of it,
Whats going on, is this normal?
Whats going on, is this normal?