Green/white Mass On Snail Shell

[BaylorPerez]

i had just noticed on both of my mystery snails their was a whitesh/greenish tint on their shells. 
so i was wondering is it possible for moss/algae to grow on their shells itself? or is this something else on their shells?
 
Water levels
Ph 7.4
Ammonia 0
nitrite 0
nitrate 2
 
heavy metals calcium 
iron
 
 
things added to tank
Plant food (Mls per 20 gal)
stress coat(did a recent water change)
stress+zyme(left over fish sludge found under gravel used this to loosen it up and clean it up)
 
Food added to tank
SInking catfish pellets(have 3 corys atm)
2 algae wafers(special diet for snails)
 

 

[NickAu]

 
i was wondering is it possible for moss/algae to grow on their shells itself?

Yes it is.
 
Can we see a photo?
 
Your snails will also love blanched leafy greens, romaine lettuce, cucumbers, spinach, carrots and canned green beans.
 
Kens veggie sticks with calcium are great for snails.
 
As for stress coat, Personally I wouldn't add the stuff to my tank.

 

[Jeremy180]

Also, while we're on the subject of what not to add to the tank, I would avoid adding anything containing copper to a tank with shrimp or snails

 

[BaylorPerez]

isnt copper like poison to snails?

 

[RyanTheFishGuy64]

 how do you have a 2 Nitrate

 

[BaylorPerez]

it was from the recent water change, i may have taken out to much. so my levels are semi ok. just need to get my nitrate back up

 

[RyanTheFishGuy64]

ive never heard of 2 before

 

[BaylorPerez]

its rare but it happens sometimes. my other tank is about 13 nitrate atm

 

[NickAu]

 
 how do you have a 2 Nitrate

I am also wondering how you can measure 2 or 13.
 
If you mean 2 Nitrite then that is toxic to fish.
 

 

[BaylorPerez]

yea my test kit is an old one. i may want to go buy an up to date one.
 
 
 
Also the photo isnt the best for my snail as its the best i could get for the time being

Here we go**** sorry about that last post

and i also did a new test on my nitrate and its 10ppm