Don't know if this is good or bad.... I hope it's good. The shrimp spent most of the day pretty quiet and hiding... I went out and when I came back at night decided to point a flashlight at the tank... To my surprise most of them are active, swimming and picking at everything, particularly at the glass, which has quite a bit of green algae. Quite a bit of them were picking at the substrate too.
Hermie is also feeding, as well as the snails, which have already cleaned the bottom part of the glass - I would say 1/4 of it.... Most for Hermie's dismay, who can no longer climb the glass for some nice algae meals (yep, he was climbing pretty high to feed!)
The goop on the rocks is starting to turn green, but the shrimp show no interest on it as of yet (it's still pretty brown).
I will monitor them this weekend and see how they do...
The substrate is clean in some parts, but some are pretty rotten, so I keep manually pulling those parts off with a long tweezer.
I am starting to have hope for this tank again.... Maybe I can turn this filter off once all the brown gunk has turned green. I expect in a week or so.... I will keep trying and seeing how they do without it.
As for the new tank - Mustafa, I got the snails at the minute they arrived, thank you

I have a sand substrate... They walked for a bit, buried themselves and I have yet to see them for a couple of days. I don't see the substrate moving either....
In my other tank I see them pretty often, granted, it's aragonite sand, which is thicker, and a smaller tank....
So I am wondering if I should be concerned?
I have 2 nerite snails in this tank, and they are doing well.... Plenty of biofilm and the sand is green with algae. The nerites cross the substrate without an issue and for what I have read MTS are much hardier...
Do you think they will surface eventually? Given 1/2 of my tank is fine sand, it's going to be tough to look for them through the entire substrate...
What do you think?
Thanks!