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Thread: FL or MH?

  1. #1
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    FL or MH?

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    can someone advise me on whether to get mh or fl lightings for a 6ft planted tank? what are the pros and cons? thankssss

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    MH.

    pros: 1) not bulky: pendant style that is:, good light intensity, replace bulbs every 2 years. prices comparable to multiple PL.

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    Heard that in HK, HQI Light very popular...

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    keith, I'm using 8x30wFL for my 6ft without any probs.. my tank consist of only echinodorus species.. (never change the tube for 2yrs liao )

    it depends on the type of plants and the theme of the tank.. if u using low light plants (echinodorus, crypto, anubias, fern..etc) then go for FL or PL

    it oso depending on the choice of fishes.. some fishes dun like strong light.. (discus/altums)

    pro of MH: strong intensity (good for high light plants, bulb last longer than all other lights, allow open concept), able to penetrate deeper tanks, without any probs

    cons: heat, cast hard shadows

    the price of MH has got down alot... u shld consider using PL or MH

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    i find the mh lights abit glaring. stare to long will see stars.

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    when you stare at bright florescent tubes you'll get blinded too
    ergo, don't stare at the lights!!!

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    krkrkrrr... u will get used to the glare.. like what yimin mentioned, even FL is glaring..

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    can someone advise me on the cost for MH lamps?
    Regards
    William

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    for taiwan made, ard $400+ for 150watts

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    Keith, maybe not stars that u are seeing but algae growing on the surface of ur eye ball! LOL! [] Just kidding.

    B.F.G
    If you've learnt, teach, if you have, give.
    Don't walk behind me as I might not lead, don't walk in front of me as I might not follow. Walk beside me, as my friend.
    Mohamad Rohaizal is my name. If it's too hard, use BFG. I don't mind.

  11. #11
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    effiency wise MH will be better. However, for bigger tanks will work best with MH. Having 2 MH lights would minimise hard shadow casting. Smaller tanks would be best with FL/PL. Bear in mind that to mount MH lights, minor drilling of the ceiling would be needed. Thus, which is appropriate much depends on your situation and setup.
    Cheers!!

    Sherwin Choo
    [email protected]

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    Guys

    I heard that if MH is used, we need to install a chiller, otherwise, the temp of the tank will be very high..
    Regards
    William

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    william, the height of the MH can be adjusted, thus, u can use a fan

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    I have the intention of getting a 4 or 5 ft tank thus I tot it would be better if I go for a 150 - 200W MH.

    Can anyone advise: -

    1) Wat is the average water temp if you put a DC/ AC fan
    2) Wat is the color of the bulb. Based on my understanding, MH gives out an orange light compare to the bright white given out by PL/ FL.

    Thanks!
    Regards
    William

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    ---------------------------------------------------------------------------
    Wat is the average water temp if you put a DC/ AC fan
    ---------------------------------------------------------------------------
    1 to 2 degree ..........


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