Here’s a little tip for you, inspired by the great Jules Verne’s 20,000 Leagues Under The Sea. It’s a simple design, a bottomless 5-gallon bucket with a waterproof LED affixed to the inside, which allows you to see easily into your fish tanks. It’s great to have a few of these on hand if you have kids touring your farm. But they’re alos extremely useful for checking on your fish yourself.