General Care Discussion :: Clean shell

[arodi]

Hi, my turtle is outdoor(medium gallon with 1/4 fill water). Age around 3 years.
She has a brown dust on her shell & under maybe its the feeding's dust, only a small amount of this is remove when she is under the sun. I clean her shell with brush and cotton. But it not effective and it is very difficult to hold it and at same time clean her and she seem angry when i clean her with the brush.
Please can anyone give me some advise how to clean her shell and under, and also how to hold her.

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[cameron740]

the tank needs to be clean...im not judging and to me im probally not right but ive never seen anything likes this before so i wouldnt know

[steve]

How big is medium gallon? I'd gently clean the shell let dry and post some new pics. It's possible the white scutes have some fungus, but it usually follows a pattern.

[arodi]

It is a 100 gallon tank and will try what you said...