Positioning MH for a 5 feet tank

[cbong]

Hi guys! Greetings!

I bought a 4 feet light for a 5 feet tank. Most cost effective in my mind.

The light has 2 x 150W MH and 4 x 54W T-5.

The position of the MH is adjustable... pretty cool Question:

To have an even spread of light, am I right to say that the MH should be positioned 1/3 from the side of the tank? i.e. The 5 feet tank is 152cm, hence the MH should be 50cm from left and the other, 50cm from right???

| MH MH |

0cm 50cm 100cm 152cm

[koolman]

Any picture to show your item.. I am also interested to know.. I am doing planted tank in my next project too..

Cheers
Koolman

[cbong]

Any picture to show your item.. I am also interested to know.. I am doing planted tank in my next project too..

Cheers
Koolman

a sketch of how I want to position the MH ...



here's the light specs:

[cbong]

would this position be optimal? or should the MH spread more to the sides since there would be an overlap at the center when both light energy meet. Also, I was told by the lighting seller that the center brace of my tank should not be blocking the light or it gets dissipated.

He quoted to say that a 6ft tank, when using 3 x MH lights should not have a center brace, but instead two separated braces so that the lights do not get blocked interesting!