thanks for all the advice, ill pick up some pedialyte tomorrow and soak him. For the rest of the questions,

-theres no toxic plants in the tank, i know this for sure, i used to work in a greenhouse
-yes he only eats crickets
-yes there is a background of plants around 3 sides of the tank, and there is not a lot of traffic
-yes i was mixing the vitamins and calcium together, ill change this to one or the other at each feeding, as i said he eats once or twice a week, so would just alternating the 2 between feedings work?
-tank arangement is the same
-i just changed the substrate, i try to every couple weeks (sometimes a bit sooner)

and ill take some pictures and post them tomorrow after he soaks.

-for the lights...i have a daylight on one side and a red heat light on the other, it is a 50 watt as it is nearly impossible to find 40 watt ones where i live. I have no idea why. anyway, so what could i replace the daylight with then? without it the tank is constantly dark (with the exception of the red light which isnt much its really just for heat)