reef diver
Active Member
Where Did U Get It!!
anemone
- Thread starter tanks alot
- Start date
T
thomas712
Guest
Total watts is total watts, no matter how much or how many lighting fixtures you have, the Total watts per gallon will change if you shut one lighting fixture down, or on, what ever the case may be.
When my VHO come on my 90 gallon its 440 watts of VHO.
So 440 watts divided by 90 gallons = 4.88 wpg.
When the 500 watts of Metal halides kick in it now becomes 940 watts of total lights divided by my 90 gallons =10.44 wpg.
Now there is some argument about actinic lighting not counting at all, but I'm not about to get into that. I'll stick with total wattage output divided by number of gallons. This is a general rule, but also a very flawed one as the number of gallons gets smaller, or also depending on what you are trying to keep. you would not for instance try to keep an acropora in a 10 gallon tank under a 150 watt MH bulb when it would require a 400watt bulb for survival. Thats a Borneman example
Thomas
When my VHO come on my 90 gallon its 440 watts of VHO.
So 440 watts divided by 90 gallons = 4.88 wpg.
When the 500 watts of Metal halides kick in it now becomes 940 watts of total lights divided by my 90 gallons =10.44 wpg.
Now there is some argument about actinic lighting not counting at all, but I'm not about to get into that. I'll stick with total wattage output divided by number of gallons. This is a general rule, but also a very flawed one as the number of gallons gets smaller, or also depending on what you are trying to keep. you would not for instance try to keep an acropora in a 10 gallon tank under a 150 watt MH bulb when it would require a 400watt bulb for survival. Thats a Borneman example
Thomas
zanoshanox
Active Member
I have two BTA's right nwo and have had even more in the past that have thrived over my 135 watts of PC in a 20 g. Will be upgrading to MH soon though.