
Is this safe
I was looking for a bigger sand container than my hamster that didn't cost too much, and that seemed like a good idea to me, but I'm not sure it's safe for her? Could the kind of wood or something be dangerous?

I was looking for a bigger sand container than my hamster that didn't cost too much, and that seemed like a good idea to me, but I'm not sure it's safe for her? Could the kind of wood or something be dangerous?
She loves free roaming and I want her to feel as comfortable as possible... So I built her hiding places and other things 💞
Yesterday I gave zucchini for the first time to my hamster and now he drank more than 25 cc in a single night (emptying almost all of the drinker) and filled half of the sand with pee! I don't think that's normal, right? Shouldn't I give you the zucchini anymore? Maybe it was a little cold, that's why? Should I take her to a veterinarian? And keep an eye on it, and if it seems to have passed it was nothing?? I'm worried
She is 4 months old and weighs 140 grams... I think it is normal but when he stretches it reaches 16-17 cm so I think it is quite large... Shouldn't she weigh more? I give her sunflower seeds, flax, soybean, rice, spelt, soy, vegetables every day or so, and twice a week a little chicken and occasionally a little egg - but I only added protein in the last 2 weeks, before I didn't know how to do it because she didn't like flour larvae. Am I doing something wrong? 😭