Short answer: Vastu places a fish aquarium in the north, east or north-east part of the living room, the side that belongs to water. Keep it out of the bedroom, the kitchen, the south-east and the south-west. Nine fish is the traditional count, but clean water and healthy fish matter far more than the number.
Why the north side of the room
Water is the element of the north and the north-east. An aquarium is clean, moving water with life in it, so it sits naturally on that side of a room. The north is also the zone tied to money and new openings in Vastu, which is why so many families want a tank there. In the living room I look for the north wall first, then the east wall, and the north-east corner only if the tank is small and the corner is not already holding a pooja unit. The rest of the room, sofa and TV included, is in my living room Vastu page.
If you keep a metal tortoise in a water plate on the same side, my page on tortoise in water as per Vastu covers spacing and daily water changes.
Whether the north is the best spot for you can also depend on your birth chart. Mercury owns the north, so a family member with a strong Mercury and a career in trade or writing often gets more out of that wall.
Where an aquarium works, and where it does not
| Place | Verdict | Reason |
|---|---|---|
| North of the living room | Best | Water zone, linked to money and opportunity |
| East of the living room | Good | Morning light, an easy wall to view |
| North-east corner | Only a small tank | The corner should stay light, and a big tank is heavy |
| Foyer, north or east side | Fine | A pleasant first view, if it does not block the door |
| South-east | Avoid | Fire zone, water clashes with it |
| South-west | Avoid | Earth zone, it wants stillness and weight |
| Bedroom | Avoid | Light, bubbles and pump noise disturb sleep |
| Kitchen | Avoid | Fire next to water, and hygiene |
| Centre of the home | Avoid | The centre should stay open |
That last row matters more than people expect. If you are not sure where the centre of your flat falls, my page on the Brahmasthan shows how I find it.
The number of fish: what the tradition says
The count people quote is nine: eight golden or red fish and one black fish. Arowana and goldfish are the popular choices. I treat this as a tradition, not a rule, and I never ask anyone to buy fish to reach a number. Choose the count your tank can actually hold. An overcrowded tank turns cloudy within days, and a murky tank in the north is worse than having no tank at all.
If a fish dies, remove it the same day and find out why. Usually it is the water, the temperature or overfeeding, not bad luck. Replace it once the tank is healthy again.
Upkeep is the real remedy
The checklist I give anyone who already has a tank:
- The filter runs every day, quietly. A rattling pump goes in for service.
- Part of the water is changed every week, not all of it at once.
- No green film on the glass and no dead plants floating.
- The tank light is on a timer, not left on through the night.
- Cables are tidy and the stand is rated for the full weight of water, glass and gravel.
- Someone at home actually enjoys looking after it.
Aquariums in Bangalore flats
Many flats here have the living room on the south or west side of the building. That is fine. Every room has its own north and east, so the tank can still go on the north or east wall of that room. Two practical points I add for apartments: check the floor can take a large filled tank before you buy one, and keep a small UPS for the air pump, because a long power cut on a warm afternoon can lose you fish.
When I suggest one, and when I do not
I do not prescribe an aquarium as a must. If nobody at home wants the weekly cleaning, a small tabletop water feature or a brass bowl of fresh water and flowers in the north does the same job with less work. Homes with cats or very young children often do better that way too. My broader home rules, room by room, are on Vastu for home.
Choosing the aquarium wall by your chart
The table above gives the safe walls. Your chart can tell me which of them deserves the tank. Water belongs to the north and the north-east, but those two sides answer to different planets: Mercury holds the north and Jupiter the north-east. If your lagna lord is Mercury, I lean towards the north wall. If Jupiter’s dasha has just started, a small, spotless tank close to the north-east often makes more sense.
Placing a tank is well within the ₹1,499 home Vastu call. If you would like every water feature, colour and room decided with your planetary periods in view, my Astro-Vastu consultation is the complete version of that reading.
Not sure where your tank should go?
Send me your floor plan with north marked and a photo of the living room. I will mark the right wall for the tank along with the rest of the home. Home Vastu is ₹1,499 for one floor or one flat, on a 45-minute call online or at my Begur studio, and the written report reaches you within 48 hours. See how my Vastu consultation in Bangalore works, or book a session directly.
Frequently Asked Questions
Can I keep an aquarium in the bedroom?
I advise against it. The light, the bubbling and the hum of the pump keep the room awake, and the bedroom should be the quietest room in the house. Move it to the north or east side of the living room instead.
Which fish is considered lucky in Vastu?
Goldfish and arowana are the traditional favourites, often with one black fish among them. What matters more is that they are healthy and the tank is the right size for them. A few lively fish in clear water beat a crowded tank.
What should I do if a fish in my aquarium dies?
Take it out the same day, test the water and check the filter and temperature. It is almost always a care issue, not a sign. Add a new fish only after the tank is stable again.
Can an aquarium be placed near the main door?
Yes, if it sits on the north or east side of the foyer and does not narrow the way in. Keep it to one side so the door opens fully and nobody brushes past the glass.
Is a fish bowl as good as an aquarium?
For Vastu purposes a small bowl in the north works, provided the water is changed often. Many small bowls lack filtration, so the fish suffer. A small filtered tank is kinder and easier to keep clean.