New at this please help not sure about my turtles shell!
I have two baby res that were given to me about a month and a half ago. This was unexpected so I used a tank I had. I went through the posts of peoples setups and i need to upgrade this one i have. Also i had gravel but i took it out for now because i read they can swallow it. I know it is a bit small but its working for me right now. I went out and got a filter, water conditioner, heater, uvb lights, heat light for the day and heat lamp for night. They seemed really happy in the set up for a good month swimming all the time eating good, but since sunday one of the turtles stopped eating, I tried separating her and feeding her separate but she still wont eat. Her top shell has turned a gray color in the past few days and im getting nervous. Ive been trying to do research before I posted but I hope someone can help me out. She also developed brown spots on her belly and they seem symmetrical but the other one doesn't have them.
Also I clean the tank every few days and I cant get it to not smell! please help! Here are a few pics of her.






How big is your turtle? about 1 3/4inches
How long have you had it? 1 month to a month and a half
What is the water temperature? 82
Did you use a thermometer? yes
Are you using a water heater? yes
How much water is in there? 2.5 gallons
Are you using a water conditioner? yes
Are you using any filtration? yes
What is the basking temperature? 90
Is there a basking light? yes
Is there a basking platform that is easy to climb on? yes
What kind is it or what is it made out of? it is a turtle dock from petsmart it has stairs going up both sides onto a platform
Is there a UVB light? yes
What have you been trying to feed it? reptomin - baby pellets and shrimp
When was the last time your turtle ate? sunday night. its Thursday now
How big is the tank/pond/enclosure? 5 gallons
Is the tank near a window? no
Is the tank in a room with a lot of activity? no
Have you read the Basic Care section? yes
Have you searched the forums for similar situations? yes
Also I clean the tank every few days and I cant get it to not smell! please help! Here are a few pics of her.






How big is your turtle? about 1 3/4inches
How long have you had it? 1 month to a month and a half
What is the water temperature? 82
Did you use a thermometer? yes
Are you using a water heater? yes
How much water is in there? 2.5 gallons
Are you using a water conditioner? yes
Are you using any filtration? yes
What is the basking temperature? 90
Is there a basking light? yes
Is there a basking platform that is easy to climb on? yes
What kind is it or what is it made out of? it is a turtle dock from petsmart it has stairs going up both sides onto a platform
Is there a UVB light? yes
What have you been trying to feed it? reptomin - baby pellets and shrimp
When was the last time your turtle ate? sunday night. its Thursday now
How big is the tank/pond/enclosure? 5 gallons
Is the tank near a window? no
Is the tank in a room with a lot of activity? no
Have you read the Basic Care section? yes
Have you searched the forums for similar situations? yes