Can You Give Us Light "par" Readings Per. Tank Sizes

mrinelfrlz

mrinelfrlz

Member
ok this might end up being a total flop but here goesi see now that light watts per gallon is hit and miss and light par is what we need nowbut some people dont have the money for par read outs
which ive been reading and i think its supposed to be about 100 par at the bottom of the substrate for a good reef tank
so my idea is this:
can people with this equipment tell us what size tank they have and give us the type of lighting system they have as in wattage and type of lights MH, T5, exc.. and the par readout they are putting out
this might in the long run help out alot of people to find the correct light set up for there tank


sound like a good idea?
 
J

jetskiking

Guest
OK, I will play. Here is one of the tanks that I have done. Oceanic thirty cube, 250w PFO ballast. PFO reflector and phoenix 14k DE bulb.
 
J

jetskiking

Guest
I also have a 120 that runs the same fixtures and the par is about the same. The fixtures are closer to the water than they were on the 30. PAR is more about depth than actual gallons.
 
mrinelfrlz

mrinelfrlz

Member
Originally Posted by jetskiking
http:///forum/post/3129871
I also have a 120 that runs the same fixtures and the par is about the same. The fixtures are closer to the water than they were on the 30. PAR is more about depth than actual gallons.
what are the dimensions of the 30gal and the 120gal?
 
J

jetskiking

Guest
Originally Posted by MrineLfRlz
http:///forum/post/3130843
what are the dimensions of the 30gal and the 120gal?
Oceanic 30 cube is 20x18x20 high. AGA 120 48x24x24 high. I ran the fixture about 15" off the water on the thirty and about 5" off the water in the 120. The 120 has two fixtures of course but the exact same everything. The PAR readings are about the same at the same levels in the tank. I don't have a pic like I do the 30g though
 
mrinelfrlz

mrinelfrlz

Member
Originally Posted by jetskiking
http:///forum/post/3130857
Oceanic 30 cube is 20x18x20 high. AGA 120 48x24x24 high. I ran the fixture about 15" off the water on the thirty and about 5" off the water in the 120. The 120 has two fixtures of course but the exact same everything. The PAR readings are about the same at the same levels in the tank. I don't have a pic like I do the 30g though
thanks for the info

and i hope this thread takes off more
 
J

jetskiking

Guest
Originally Posted by MrineLfRlz
http:///forum/post/3130868
thanks for the info

and i hope this thread takes off more
I agree, there is alot to be learned from people taking PAR readings. Problem is PAR meters are expensive. luckily i know a few people and our local club owns a couple.
 
mrinelfrlz

mrinelfrlz

Member
Originally Posted by jetskiking
http:///forum/post/3130876
I agree, there is alot to be learned from people taking PAR readings. Problem is PAR meters are expensive. luckily i know a few people and our local club owns a couple.
is there anyone in your club or that you know that can throw up some more info on this forum?
 
fraggle rock

fraggle rock

Member
PAR Photosyntheticllay Active Radiation which is a mesure of usuable energy( photons) within the wavelength of 400nm to 700nM (visable light) used for photosynthesis. In aquarium terms the measure we need to truly provide the appropiate light for coral growth, as compared to an inaacurate watts per gallon measure which is only a measure of energy used.
 
fraggle rock

fraggle rock

Member
A PAR meter will let you take readings in different areas of your tank, you can get less accurate redings with a LUX meter and math, I would have do dig up the formula and they are inaccurate only be a ballpark. PAR meters are not cheap Jetskiking linked me to Apogee meters which are around $350 bucks, I found a sight to rent them, but you would be best to ask a trusted LFS or local reef club.
 
mrinelfrlz

mrinelfrlz

Member
well i was thinking about upgrading when i got the time and MONEY!
i was thinking about a 220 but i dont think 250 MH would penetrate it enough or should 3 be enough?
the tank would be 29" high
 
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