I had to buy new bottles. These glass ones were recommended to me on here. I'm not a big glass fan, but they work great.
this is what we use. We had many plastic one leak. Its a glass bottle, no leaks. Mind you the little carrot water gauge can come out to be cleaned (or lost lol)
I use this one and it works great for me. I have two of them and one leaks a tiny bit if he’s really shaking things. I put a little extra square of fleece under it just in case and I’ve never had any problems. Living World Eco Plus Water Bottle, 12-Ounce https://www.amazon.ca/dp/B003TTZMIO/ref=cm_sw_r_cp_api_glt_i_0FSDKSCA7D6GY92K8TYC?_encoding=UTF8&psc=1
I gave my rabbit a bowl but I use this water bottle for my pigs and have had minimal leaking: https://www.amazon.com/dp/B003TTZMIO/ref=cm_sw_r_cp_apa_glt_fabc_57RJYMDZMZ38BQ4WCMHY?_encoding=UTF8&psc=1
Fill it up all the way to the top each time and put the lid on tight. A bottle brush should help with keeping the inside clean.
I bought this one and it doesn't leak at all. The 16 ounce is a good size too and its only $8
I don't know about perfect, but I've been using the Living World bottles. They leak a little when you move them around but there's no persistent leak in the cage, and they fit perfectly in a c&c cage. I haven't had any problem with clogging or backwash either. I've had four of these bottles since January and there hasn't been any issue with wear on the seal or anything like that.
Here is the link: https://www.amazon.ca/Living-World-Water-Bottle-12-Ounce/dp/B003TTZMIO
The brand is Living World, and is made of glass. The mounts are custom, since we have no mounting points. Here is an example: Amazon
And the idea behind the tank was that it was as natural as we could get it. The only "non-natural" thing in there is a plastic tube we digged under the bedding, and the tank itself.
There are those water bottles that you attach to a cage and when he presses with his tongue the water comes out
Stuff like this
He's pressing with his butt lol
We have this: https://www.amazon.com/Living-World-Water-Bottle-12-Ounce/dp/B003TTZMIO/ref=sr_1_1?ie=UTF8&qid=1507550221&sr=8-1
Have had it for about a year and a half with no issues.