LoL - i didn't even notice that you dredged up a year old thread.
The same question apply to you thought. Hydrogen Sulfide doesn't just appear for no reason. Conditions have to be right (stagnant is the easiest analogy).
Thank for the offer. Here are my details. The smell is only prevalent within the rim of the tank (so you have to be pretty close to the surface. It does waft out when opening the cabinet door for the sump.
1 - when was the sand put in.
Sand was rinsed in tap water and then a final rinse in in RO/DI water (produced at home).
2 - when was the water put in.
The water was put in about 24 hours after the sand was put into the tank. I put straight RO/DI water in and mixed Nyos Pure salt in the tank once it was full.
3 - was the sand wet before you put it in and for how long
Mentioned above - sand (CaribSea special grade dry) was wet at the bottom of the tank for about 24 hrs before water was added.
4 - is there rock.
I did add Marco Rock that was glued together
5 - when was the rock put in.
The rock was dry as well and was put in dry just before the sand (rock was not rinsed…)
6 - what else was put in and when
I have a Red Sea Max 350 and hooked up the return pump, wave makers, heater, skimmer)
7 - when was the salt mixed
Salt was mixed in the tank once it was full of RO/DI - I used the wave makers to mix the salt
8 - how was the tank cleaned prior to installing it.
….and this might be the issue…I only did a cursory wipe down with tap water after setting up the stand/tank and then forgot to to do a proper wipe down with bleach…
9 - you said rodi. Is it city or well water.
We have city water
10 - any other details you can give us?
My first reef tank a so I am in the deep end on this one…