Are you feeding them anything else besides pellets? Red ear sliders need a wide variety of food,my vet told me Red ear sliders sometimes develop those pink spots on theyre plastron because "lack of nutrition,bad water quality,no UVB exposure,execessive growth,or sometimes certain foods like shrimp or carrots can tinge the shell a funky color,or possible septicemia" the cause of my experience was 'lack of nutrition,excessive growth,little UVB exposure' i quickly changed all that though and they seem to be fine the pink color is barely theyre now.
All of the above sounds like me. Lack of UVB, I am learning tonight about the difference, water quality I am learning, I had a filter and did not think I had to change the water, but because I took out the gravel I saw their living conditions were not great, lack of nutrition could be also cuz I am just feeding them the pellets I have pictured, and have not feed them carrots or shrimp. Could be excessive growth as well, cuz the big one is EATING EVERYTHING I PUT IN, and I had to take Michaelangelo out of the tank earlier so I could feed Donatello and Leonardo. Then after feeding I put Michael back in. Then also, Leo does not have the pink, and if he is not getting his fair share of the food, could be why he is not growing, etc.
well, leonardo might have somekind of winter mode like my turles, eat about 3 pellets per 4 days, sleep, poop, swim, bask. Or he might have MBD if hes not active at all.
I like that idea. At first I thought well maybe little Leo had eaten some of the gravel, cuz I just got that out earlier this afternoon, but he is getting active, I had him out today for a while, while dh was dumping the water from the tank. So they all had some "mom time" today I carried them around in a bowl everywhere I went so I knew they were not getting out. LOL And what is MBD?
Hoping all goes well with these little guys!
3 Red Eared Slider Turtles, 1 Chinese Dwarf Hamster, 1 Chilean Rose (Grammostola rosea) Tarantula, 2 Aquatic African Clawed Frogs, and 4 Purple Pincher (Coenobita clypeatus) Hermit Crabs and 3 boys