My turtle's shell is curving. What causes it and how to help?

It would appear this turtle, not a tortoise, is suffering nutritional deficiency. Reptiles require UVB lighting, either natural unfiltered sunlight or artificially produced by an appropriate light source, in a addition to an appropriate diet with adequate calcium and vitamin supplementation. All these things will aid in the development and maintenance of a health shell. The deficiency may be reversible, however the shell may be malformed for years to come if it survives. Ideally, this turtle should be examined by a veterinarian. A specialist can be consulted via phone or online to obtain proper treatment information. In general, turtles need clean water, a heat lamp for basking, a UVA/UVB light source and a dry area for basking. Most are omnivores and will eat small prey (feeder fish, worms, crickets), fresh greens and a commercial pelleted diet. As stated above, they also require calcium and vitamin supplementation. You can find general care information here: http://www.austinsturtlepage.com/Care/care.htm

Turtles need more than a heat lamp for good health. Basic requirements include: clean water, a water heater, UVB light, basking platform, balanced diet and vitamins and minerals. Sunlight is good, however window panes and tank glass block most of the beneficial UVA/UVB rays that turtles need to synthesize Vitamin D3 and to properly utilize calcium. A good UVB bulb should be placed above the tank no more than 12-14 inches away from the basking area. It should not be blocked by glass, Plexiglass or fine mesh. The peeling and white spots may be due to poor water quality, poor diet, lack of UVB lighting or a combination of the three. Keep water clean via filtration and weekly partial water changes. Scoop out uneaten food daily. The filter should be rated for at least twice the volume of the tank since turtles can be very messy. You may be able to get Shelby to eat greens if you offer them about an hour or two after the heat lamp comes on in the morning. This will give her time to warm up. A cold reptile will not eat. Dice the greens and vegetables into manageable pieces. they should be dusted several times weekly with a calcium supplement and a multivitamin. Once she eats the greens, you can offer pellets and protein (feeder fish, nightcrawlers, crickets, raw beef heart, etc.). The spots can be gently scrubbed daily using a soft bristled brush and diluted Betadine or chlorhexidine (Hibiclens). Allow for a 1-2 hour dry dock (out of the water) after each cleaning.If it doesn't improve or if Shelby becomes lethargic or stops eating, then have her examined by a your veterinarian or a vet experienced in treating reptiles. Since most aquatic turtles are red eared sliders or yellow bellied sliders, I have included a link regarding care and keeping below. If you have a different species, post a new question with the species or request a consultation and we can discuss the case in greater detail. http://www.anapsid.org/reslider.html

This degree of deformity is likely permanent. It typically is due to a poor diet and improper husbandry. The result you can do is maintain proper environmental parameters and feed a balanced diet including a calcium supplement and a multivitamin. Trimming the nails is also recommended. You can review slider care at the link below. http://www.reptilesmagazine.com/Red-Eared-Slider-Care-Sheet/ http://www.anapsid.org/reslider.html

Sam may not be getting enough calcium and UVB light exposure. This can lead to a soft shell. Make sure he has at least 30-60 minutes of exposure to full, unfiltered sunlight each day or provide a UVB light source in his tank. It should be no more than 12-16 inches from the surface of the basking area depending on the type of bulb. It should not be blocked by glass, plexiglass or fine mesh. The ZooMed ReptiSun bulb is an excellent light source. Feed a commercial pelleted diet and supplement with fresh greens and prey. Dust with a calcium supplement and a multivitamin. Leave a cuttlebone in the tank as a source of calcium that can be munched on when needed. It would appear there may be a vitamin A deficiency based on the swollen eyes in the image posted. Feed red or orange vegetables and dark, leafy greens as these contain higher levels of vitamin A. ZooMed Repti Turtle Eye Drops should also help. You can find it online or in most pet stores. The link below will provide more information regarding the care and husbandry of sliders. http://www.anapsid.org/reslider.html

Sly's shell does not look bad. The ridge you see is normal. True pyramiding is rare in turtles, that's not saying it doesn't happen. When it does, it is usually a result of poor diet and environment. Pyramiding is much more common in tortoises. YBSs are omnivores. They should be fed mostly greens and vegetables with a small amount of protein in the form of prey such as feeder fish, crickets and earthworms. A commercial pelleted diet supplemented with greens and prey is recommended. Calcium and multivitamin supplements, usually powders sprinkled on food, are necessary. UVB lighting is also critical to shell health.

Sounds like he may have hypovitaminosis A. I suggest you read this article for suggestions on care and treatment. This is a diet and housing/lighting/temperature issue so be sure you are caring for him correctly. ( https://www.petplace.com/article/reptiles/general/vitamin-a-deficiency-hypovitaminosis-a-in-turtles/ ) ( http://www.avianandexotic.com/care-sheets/reptiles/aquatic-turtle/ ) As for the shell rot, you cannot keep an aquatic turtle on dry land 24/7. You should put him in water four one hour a day to eat and toilet then dry dock him again on land in a soft towel with a small, shallow water bowl for the remainder of the day. It is also important to get these turtles some UV light. At least twenty minutes a day in the sunshine or a set up with a UV lamp works well. It is also important the species are kept at their preferred body temperature to encourage the body to heal, a cold turtle can not mount an immune response. As a general rule around 25C suits most turtles.

Thanks for reaching out about your aquatic turtle. Water temperature needs to be kept warm for nutrient absorption. Without pictures, it is difficult to assess the shell. Insects are important for these young animals but all worms/insects need to be gut loaded for nutrients, as otherwise are bags of fat. High calcium levels are important for shell strength. Good luck.