The fecal you could get done at herp vet they aren't expensive at all. And if that's all the viamins they get is the calcium in the water frpm the conditioner then no that wouldn't be enough. You should be giving them a multivitamin and calcium and d3 and the uvb will help them process the d3 better. Hope I said that right. If you haven't been providing the calcium and d3 then I would say mbd is probably whats happening from the sounds of the symptoms. A good brand is Repashy Calcium Plus, this has calcium and D3 and the multivitamin all in one. Im editing because I almost forgot, I do a 25% water once a week with mine. And I usually change the filter pad around the end of the month.