Smelly tank

[Coralgurl]

Test results
Ammonia 0-.25 it's in between the 2 colors
Nitrite 0
Nitrate 0.5
Phosphates 0

No no, not vacuuming sand bed, just the gunk out of the sump. Trying to get the powerhead to move it around a bit but I'm not touching the sand.

I added 25 new snails and transferred about 5 out of my smaller tank, plus a couple of hermits, the 20 sand snails and last night a sand starfish. If I need a bigger cuc, I can add. I didn't use live sand but added a cup of sand out of my 55 to seed it, did this as soon as the tank was salty.