This isn't exactly an item from my past and it isn't a specific item either.

I just legit cannot find this – there is a mini, submersible aquarium sized hole in my soul.

You see, my pet has a drinking water fountain (because he's a spoiled baby) that originally came with a small, underwater light that was attached to the battery.

But after about a year the battery to the fountain died and the replacement I received doesn't come with a light!

The reason this is so handy is because I can just glance at his fountain at any point and see how full it is, without the need to take off the lid and check.\ (see image for example)

I guess you don't always realize how helpful some little things are until you no longer have them...

So yeah, basically I need need a small light that can:

1) safely be entirely submerged under water 24/7

2) is not battery powered (need something with a built in cable)

3) can easily fit within an approximately 9 x 6 x 4 inch container

4) is not a UV light, which could harm my pet

I know this isn't your traditional HMF post, but I REALLY would be forever appreciative if someone could still help me find something like this!