Very confused on MH prices!?!?!

Discussion in 'Lighting' started by Jaco Schoeman, 1 Jun 2009.

  1. Jaco Schoeman

    Jaco Schoeman MASA Contributor

    Joined:
    22 Dec 2008
    Posts:
    2,241
    Likes Received:
    48
    Location:
    JHB
    Hi guys

    I am totally confused on Metal Halides (once again)

    I enquired from a lighting company in Boksburg on what a DE 150W MH unit and gear costs. I was shocked to hear R148 for the unit, R220 for the gear and R175 for the tube... Can that be right? Why is the aquarium versions then so expensive? They could not tell me whether this MH has the UV protection lens on, and could only tell me it is an IP20 unit. Thus I will need to splash proof / moist proof it.

    But if this is the case, do you recon I could just use this? Where can I get a UV glass to replace if need be? The manufacturer is Radiant...

    Any advice?
     
  2. AdS Guest




    to hide all adverts.
  3. inflames

    inflames

    Joined:
    29 Oct 2008
    Posts:
    923
    Likes Received:
    9
    Location:
    Randparkridge (Johannesburg)
    watching this! wanna hear what the guys in the know say!
     
  4. Mekaeel

    Mekaeel Moderator MASA Contributor

    Joined:
    8 May 2007
    Posts:
    24,229
    Likes Received:
    127
    Location:
    Point Waterfront Durban
    The price sounds normal. What bulb is it?
     
  5. Jaco Schoeman

    Jaco Schoeman Thread Starter MASA Contributor

    Joined:
    22 Dec 2008
    Posts:
    2,241
    Likes Received:
    48
    Location:
    JHB
    Don't know and don't really care - I wouldn't go for it... Would rather go for known aquarium bulbs.
    But why then does this cost +/- R1200 at petshops? EXCL the bulb?

    How do I get it UV safe?
     
  6. Mekaeel

    Mekaeel Moderator MASA Contributor

    Joined:
    8 May 2007
    Posts:
    24,229
    Likes Received:
    127
    Location:
    Point Waterfront Durban
    Because you buying it from a petshop :biggrin:
    So there is no UV glass cover on it? If not, buy 8mm tempered glass, it will solve the UV problem ;)
     
  7. Mekaeel

    Mekaeel Moderator MASA Contributor

    Joined:
    8 May 2007
    Posts:
    24,229
    Likes Received:
    127
    Location:
    Point Waterfront Durban
    By the way, do you have a pic of the holder?
     
  8. Tony

    Tony

    Joined:
    23 Aug 2008
    Posts:
    4,093
    Likes Received:
    68
    Location:
    Honeydew, Johannesburg
    It's probably Osram bulbs which are reasonable. I saw 400W daylight SE Osram bulbs yesterday at Builders for about R375
     
  9. Jaco Schoeman

    Jaco Schoeman Thread Starter MASA Contributor

    Joined:
    22 Dec 2008
    Posts:
    2,241
    Likes Received:
    48
    Location:
    JHB
    So do I just have to make sure it is watertight and that i put a 8mm tempered glass in front of it?

    Picture below:

    [​IMG]
     
  10. Warr7207

    Warr7207

    Joined:
    28 Dec 2007
    Posts:
    12,781
    Likes Received:
    31
    Location:
    JHB
    I have noticed on the BIG reflector type MH units that there is no glass cover, just the globe. Does the globe have a UV filter ?
     
  11. Mekaeel

    Mekaeel Moderator MASA Contributor

    Joined:
    8 May 2007
    Posts:
    24,229
    Likes Received:
    127
    Location:
    Point Waterfront Durban
    Warr, as far as I know, the DE bulbs dont come with a built in filter, only single ended bulbs do.
     
  12. Mekaeel

    Mekaeel Moderator MASA Contributor

    Joined:
    8 May 2007
    Posts:
    24,229
    Likes Received:
    127
    Location:
    Point Waterfront Durban
    It doesnt have to be water tight, the light will be about 20cm above water level.
    Judging by the pic this already has a UV filter.
     
  13. Jaco Schoeman

    Jaco Schoeman Thread Starter MASA Contributor

    Joined:
    22 Dec 2008
    Posts:
    2,241
    Likes Received:
    48
    Location:
    JHB
    As far as I understand, SE tubes don't need UV filters, only DE does...?
     
  14. Mekaeel

    Mekaeel Moderator MASA Contributor

    Joined:
    8 May 2007
    Posts:
    24,229
    Likes Received:
    127
    Location:
    Point Waterfront Durban
    That is correct Jaco!
     
  15. lIghty

    lIghty

    Joined:
    3 Nov 2007
    Posts:
    5,053
    Likes Received:
    52
    Location:
    Westville, Durban
    "Aquarium" goods are directed to hobbists and will always be much more costly. Jaco, that will work but like you said, just use a decent bulb (like a 14000K) as the one they will sell you is only about 3500k - 7000k.

    Warr like Meks pointed out, DE bulbs require an external UV shield were as SE bulbs have a build in shield, hence the reason they are generally much larger in size.
     
  16. Neil H

    Neil H Moderator MASA Contributor

    Joined:
    11 May 2008
    Posts:
    2,795
    Likes Received:
    56
    Location:
    JHB
    Its crazy !!!! but we are ripped off a hell of a lot with these sorts of things.....

    Jaco out of interest is there a big diff in price between the 150W and the 250W ? Pls pm me details of where you got this quote from
     
  17. Mekaeel

    Mekaeel Moderator MASA Contributor

    Joined:
    8 May 2007
    Posts:
    24,229
    Likes Received:
    127
    Location:
    Point Waterfront Durban
    I have found the 250W SE bulbs to be cheaper than the 150W DE bulbs.
     
  18. Jaco Schoeman

    Jaco Schoeman Thread Starter MASA Contributor

    Joined:
    22 Dec 2008
    Posts:
    2,241
    Likes Received:
    48
    Location:
    JHB
    I didn't enquire about the 250W MH prices exactly, but they said that the 250W SE MH is about the same prise. They couldn't understand why I want a 150W when I can have a 250W for not much more...

    Neil, will PM to you now...
     
  19. Stressed Eric

    Stressed Eric

    Joined:
    20 May 2009
    Posts:
    294
    Likes Received:
    2
    Location:
    Pietermaritzburg Kzn
    One thing to keep in mind is that the commercial housings and reflectors are designed for flood lighting a wide area, whereas the specialist marine units have a much more narrow angle of lighting and generally smaller. But yes, low volume and low demand make for high prices but we still get ripped off!
     
  20. Reef Maniac

    Reef Maniac MASA Contributor

    Joined:
    15 May 2007
    Posts:
    2,899
    Likes Received:
    112
    Location:
    Bloemfontein
    That's what I've been saying for many years... and why I always advise to NOT buy ANY lights from a pet shop.

    Buy the luminair and gear, but not the lamp. You can get a pretty decent 10 000K lamp directly from Venture Lighting in Cape Town for around R350.00 - and they do mail order. I have ordered many lamps from them in the past, and have always been very happy with their service.

    I have used the same type of luminair (manufactured by Radiant) as in your photo, and it works great :thumbup:

    Hennie
     
  21. Jaco Schoeman

    Jaco Schoeman Thread Starter MASA Contributor

    Joined:
    22 Dec 2008
    Posts:
    2,241
    Likes Received:
    48
    Location:
    JHB
    Thanks Hennie!!! :thumbup:
     
Recent Posts

Loading...
Similar Threads - Very confused prices Forum Date
Very confused Tank Owner... Water Parameters and Additives 8 Oct 2011
Advent Specials.....everyday!!!!! Sponsor Specials 30 Nov 2016
Hair algae everywhere General Discussions and Advice 2 Oct 2016
Hi Everyone New Members 18 Sep 2016
Our very first golden marindo shipmenti Aquatic Warehouse 26 May 2016
Yuppie Pets Everything must go sale :) Sponsor Specials 30 Mar 2016
Hi Everyone! New Members 25 Mar 2016