MH heigh placement/comments please

Tony Chiang · Joined: 16 Aug 2007 Posts: 1

Hi,
I have designed a tank which is 24x24x15 (high), the MH is place
roughtly 12~13 inch above the water surface. Is this too far? I am a
bit concern that there won't be enough light. By the way the MH is
150W 10000k and I am putting another 55w PC for blues, is this enough?

Archived from group: rec>aquaria>marine>reefs

Richard Reynolds · Joined: 16 Aug 2007 Posts: 268

mine sit about 3" from the top of the water, only once have i had a problem, and it was at
least 75% my dumb butt that broke the bulb, singed my arm, pissed me off ......

--
Richard Reynolds
Richard.Reynolds@usa.net

"Tony Chiang" wrote in message@posting.google.com...
> Hi,
> I have designed a tank which is 24x24x15 (high), the MH is place
> roughtly 12~13 inch above the water surface. Is this too far? I am a
> bit concern that there won't be enough light. By the way the MH is
> 150W 10000k and I am putting another 55w PC for blues, is this enough?

Matt · Joined: 16 Aug 2007 Posts: 17

i used to have mine about 3 inches off the water, and i too burnt my arm. i
would say 2nd degree burn, i have a scar about the size of a 50 cent piece
on my forearm for a reminder. of course all my fault and they are so hot it
doesnt hurt till after the fact. that was when i was using a prebuilt
all-glass hood. i have since built my own custom hoom for my 55. 2 175 mh
and 2 20watt flor for blues. bulbs now about 8 inches from water. although
i will say i never had a problem with them 3 inches off the water but had to
clean them off from salt spray every few months. (tiny bubbles poopping
overtime add up)

"Richard Reynolds" wrote in message$Dr3.62607@fed1read02...
> mine sit about 3" from the top of the water, only once have i had a
problem, and it was at
> least 75% my dumb butt that broke the bulb, singed my arm, pissed me off
.......
>
> --
> Richard Reynolds
> Richard.Reynolds@usa.net
>
>
>
> "Tony Chiang" wrote in message
> @posting.google.com...
> > Hi,
> > I have designed a tank which is 24x24x15 (high), the MH is place
> > roughtly 12~13 inch above the water surface. Is this too far? I am a
> > bit concern that there won't be enough light. By the way the MH is
> > 150W 10000k and I am putting another 55w PC for blues, is this enough?
>
>

Just Adira, period. · Joined: 16 Aug 2007 Posts: 14

Richard Reynolds wrote:

> mine sit about 3" from the top of the water, only once have i had a
> problem, and it was at least 75% my dumb butt that broke the bulb,
> singed my arm, pissed me off ......
>
> --
> Richard Reynolds
> Richard.Reynolds@usa.net
>
>
>
> "Tony Chiang" wrote in message
> @posting.google.com...
>> Hi,
>> I have designed a tank which is 24x24x15 (high), the MH is place
>> roughtly 12~13 inch above the water surface. Is this too far? I am
a
>> bit concern that there won't be enough light. By the way the MH is
>> 150W 10000k and I am putting another 55w PC for blues, is this
>> enough?
>
>
>

Ouch. Who knew that keeping a fish tank was so hazardous?

--
Live on the webcam: I eat a Flake.

Dragon Slayer · Joined: 16 Aug 2007 Posts: 440

I keep a 400w over a grow out tank that is adjusted between 3" and 20"
depending on how new and accustomed to light the current occupants are I
have never had any ill effects from it at any distance.

over my 29 reef I kept a 400w @ 8" the heat transfer is allot higher when
its down close to the water so controlled ventilation is a must have. as
for the salt creep on the bulbs as some others have mentioned I never have
had a great deal of it at any distance, I guess the 400's are so hot they
keep it from making it to them before its vaporized or they burn it off
after the fact.

YMMV
kc

"Tony Chiang" wrote in message@posting.google.com...
> Hi,
> I have designed a tank which is 24x24x15 (high), the MH is place
> roughtly 12~13 inch above the water surface. Is this too far? I am a
> bit concern that there won't be enough light. By the way the MH is
> 150W 10000k and I am putting another 55w PC for blues, is this enough?

Cam · Joined: 16 Aug 2007 Posts: 8

Oh my god, its a Porger!!!

"Just Adira, period." wrote in message@65.24.3.199...
> Richard Reynolds wrote:
>
> > mine sit about 3" from the top of the water, only once have i had a
> > problem, and it was at least 75% my dumb butt that broke the bulb,
> > singed my arm, pissed me off ......
> >
> > --
> > Richard Reynolds
> > Richard.Reynolds@usa.net
> >
> >
> >
> > "Tony Chiang" wrote in message
> > @posting.google.com...
> >> Hi,
> >> I have designed a tank which is 24x24x15 (high), the MH is place
> >> roughtly 12~13 inch above the water surface. Is this too far? I am
> a
> >> bit concern that there won't be enough light. By the way the MH is
> >> 150W 10000k and I am putting another 55w PC for blues, is this
> >> enough?
> >
> >
> >
>
> Ouch. Who knew that keeping a fish tank was so hazardous?
>
> --
> Live on the webcam: I eat a Flake.