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Old 07-04-2005, 12:29 AM
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Default MH distance from water surface?
It is a DIY retro 175w 20k XM bulb, going over a 20g standard size tank. There is no glass or aycrilic between the light and the water. How far should the light be placed above the surface of the water? I'm thinking 12"-16". Does this sound about right?
thanks
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Old 07-04-2005, 12:51 AM
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I believe that the light is usuall 6" - 8" above the surface of the water.
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Old 07-04-2005, 01:09 AM
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water splashing on a hot bulb...
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Old 07-04-2005, 05:22 AM
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I have mine about 5" from the water, haven't had any mishaps yet...knock knock.
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Old 07-04-2005, 05:55 AM
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I run mine about 8 inches off the water.
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Old 07-04-2005, 06:16 AM
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with all that flow ? and no splash...I find that hard to believe.

I run my DE shielded fixtures at least 8-10" and have to clean the splash.

I guess I must have surface flow.
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Old 07-04-2005, 07:03 AM
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Quote:
Originally Posted by EmilyB
with all that flow ? and no splash...I find that hard to believe.
OK. Nonetheless, 8 inches, no splash. After 3 months, the bulbs only needed wiping once.
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Old 07-04-2005, 12:47 PM
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Quote:
Originally Posted by EmilyB
with all that flow ? and no splash...I find that hard to believe.

I run my DE shielded fixtures at least 8-10" and have to clean the splash.

I guess I must have surface flow.
ok I run mine between 4 and 6 inched off the water.

Steve
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Old 07-04-2005, 01:32 PM
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Thankyou everyone. I will go with 8"
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Old 07-04-2005, 03:32 PM
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Quote:
Originally Posted by reef_raf
Quote:
Originally Posted by EmilyB
with all that flow ? and no splash...I find that hard to believe.
OK. Nonetheless, 8 inches, no splash. After 3 months, the bulbs only needed wiping once.
What do you whipe it with?....just a damp rag?
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