msbrew
Contributor
I will try that the next time my granddaughter has me snorkling in the hot tub!If that's all it takes.. then you could always color in the glass of your mask with a black marker, fill your tub with ~79degree water (pretty close to the temps you might see in the tropics), drag a tank and regs next to your tub and enjoy. Crap vis diving in your own home. If you like salt water crap vis diving, synthetic sea salt mix is available from your local aquarium store.