I got 2 RES (Tomy and Ton-chan) a week ago and I am concerned about Tomy. I notice that his/her shell has white stuff on it.
I cannot tell if it's shedding, or has infections like fungus or pyramiding.
Can anyone have a look at his/her photo, and let me know what it might be?

How big is your turtle? Approximately 1.5 inches
How long have you had it? 1 week
What is the water temperature? 27-29 Celcius
Did you use a thermometer? yes
Are you using a water heater? yes
How much water is in there? not sure
Are you using a water conditioner? no
Are you using any filtration? no, but i change the water everyday
What is the basking temperature? not sure
Is there a basking light? not yet
Is there a basking platform that is easy to climb on? yes
What kind is it or what is it made out of? not sure
Is there a UVB light? not yet
What have you been trying to feed it? turtle pelette
When was the last time your turtle ate? perhaps 4-8 pelette/day
How big is the tank/pond/enclosure? not sure
Is the tank near a window? no
Is the tank in a room with a lot of activity? a bit
Have you read the Basic Care section? yes
Have you searched the forums for similar situations? yes
Is there any other unusual activity/symptoms? He sleeps a lot for the past 3 days.
Thanks in advance for your advice.

