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Guys please help me setting up my new lighting hood.
Tanks specs:
24x12x18 LBH
co2 - diy and excel (soon will go for pressurized)
Substrate - Laterite topped with sand
Filter - IPF
Ferts - EI and seachem flousrish comprehensive
Current lights - 2x36w pll.
Please suggest where should i place particular light?

That's a lot of light for a 2 footer.

Correct me if I am wrong, but I guess your question is at what height should you place the light ?? Since there is no other place other than the top to position the lights anyways.

If the above is correct, then the height will depend upon :

- Intended plant mix
- Kind of fish you want to keep
- Colour of sand
- Type of tank - study, display, kid's room
- Construction of the hood - open or closed
- Your maintainence regime - how often do you intend to clean the tank ?

Let us know your thoughts on the above...and you are sure to get some help.

Not height. I want to know are those light placement correct?
Should i move the pll at the back or center is ok.
Or should i buy 3x24w t5ho or 2x and 1 36w pll.

Buy 3x24W T5HO of the same brand.

People say that 8000k pll are good for stem plants. As i m not getting 8000k t5ho so i was planning to get 1 8000k pll. So you sure that i should go for 3x24w t5ho?

Buy 6500 K 3X24 watt tubes. They will be enough to grow any type of plant. Most of the aquarists thoughts that light is only the key factor to grow plants. You need to increase dosing with high light.

Yeah i am ready with dosing. Btw can i use 28w t5 ballast for 24w t5ho tube?

Yes, you can use the 28W ballast.

Thank you guys for your replies. Experts like you helps newbies like me.