Split level, the dining room is one meter higher than the living room. I want to buy a fish tank. I would like to ask if it is Feng Shui ok to place the dining room (one meter higher than the living room)? Is it a shower head?

No problem, don’t worry.

The so-called shower water mainly refers to the relatively high position of the water in the living room (fish tank, seepage, etc.), usually higher than the person's chest, and close to the seat or bedside, because in this way, when the person sits or lies , the water is higher than a person's head, so it is called "head shower water". Being affected by "head shower water" for a long time will cause easy illness, mental decline and other effects.

Your fish tank is in a restaurant and does not belong to the same space as the living room. As long as the height of the fish tank in the restaurant does not exceed the chest height of a person standing in the restaurant, or it is far away from the seats in the restaurant, it does not constitute a shower.

If it doesn’t matter how far it is as long as it is high, then wouldn’t the water tank of the bathroom water heater also contain shower water?

So, the most important thing is to look at the height and the relationship between them.