A customer came in and asked for a 150-watt light bulb for a fish tank. That sounded a bit on the bright side for my liking, so I explained to the customer that such a product did not exist in the aquatic trade so it must be something homemade. Even then, I said, I’d never seen a 150-watt strip light, so it had to be a bulb and I’m not sure a 150-watt light bulb and water are a good combination. It turned out, eventually, he wanted a 150-watt heater. Yes, there’s a slight difference between a light and a heater but still, he went away a happy customer.