Which LED bulbs to go for?

[Gfish]

Hi all,

I'm planning a large tank, 6.5ft long x 26wide x 20.5high. I'll be building a huge foam raft with substrate in troughs to plant tall emersed plants into. Inside the tank will be nothing but anubias on large pieces of wood.
What I'm struggling with is the choice of bulbs. I want LED and I want warm white. I've got 2 strips of 4 spotlights that will be wired and mounted inline. These have a dimmer facility built in so I would like to use dimmable bulbs. But should I go for 9watt, 6watt or watt???

The lights will be mounted 3 to 4ft above the water and I'm not looking for strong lighting but don't want to regret going too low on wattage when I buy these bulbs.
Anyone done anything similar and can advise???

Is there a downside to having 9watt and having to dim them right down???

Many thanks

Gavin

 

[Alastair]

At 4 feet above water level I'd say the 9watt would be ideal mate.


Sent from my iPhone using Tapatalk

 

[foxfish]

You might find something here Help with my new led lighting | UK Aquatic Plant Society

 

[Gfish]

I'm leaning toward 6watt bulbs with 45 degree angles. I have a feeling 9 watts will be too bright and I'll be be dimming it down as far as possible. On the description of 9watt bulbs on a page on Fleabay they say that they're the optimum strength for lighting a room. I only want to light a fishtank and I have 2 strips of 4 spotlights.

I might buy the 6 x 6watt 45 degree and use 2 stronger wider beam bulbs with them to make 8 in total.
What's your thoughts on that????

Cheers

 

[Alastair]

Sounds good to me mate, one wide beam bulb per strip. Worth a try, you can always change them out anyway if the 6 watts are sufficient enough.
I replied back to your email by the way buddy


Sent from my iPhone using Tapatalk