Question Ati 8 bulb 80 w par readings

[Mattl22]

Hi
So I’ve been having trouble coloring up sps
Finally got around to checking my par and was getting 2-300 mid tank 100 on bottom was kinda surprised thought it should be more all bulbs 2 months old
Could it be a ballast issue or heat issue ?
All bulbs seem to be firing properly


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[shookONES]

How are you testing par?

 

[vashawn]

whats the height off the water?

 

[Mattl22]

Fixture is 8” above tank prob 10” from top of water tank is 28” deep (I could lower it 6” ) but rather leave it where it is so I can get hands in tank with out messing with fixture
I have Acrilyic custom screen inserts but I measured with and with out screen and there was a Sm difference in par reading
I was using a apogee I believe meter from advanced marine aquatics



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[Mattl22]

I guess to narrow my ? Down a bit I wanna make sure the fixture it self is working properly
So is it possible that all the bulbs fire up and appear to be fine but for some reason they r not putting out the correct amount of par ?


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[shookONES]

Underwater PAR Measurements | Apogee Instruments

www.apogeeinstruments.com

You have to multiply # by 1.32 underwater, as per their instruction. The adjust values seem about right.

 

[MIKE NY]

Matt also depends on the spectrum of the bulbs. I replaced actincs with blue+ and coral+ bulbs and it helped a lot. My tank is 27” deep....


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[Reefinny]

Yeah what bulbs are you using? I'm running ATI blue plus and coral plus (4ea) my fixture is about 14" over the water 14" down I am 400 par this is on a shallow tank but should still be putting out more.

Are you running XHO strips with it also?

What model par meter?

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[Jamesmost]

Underwater PAR Measurements | Apogee Instruments

www.apogeeinstruments.com

You have to multiply # by 1.32 underwater, as per their instruction. The adjust values seem about right.

Depends which meter.... It the 210 or 510 the calculations are built into the meter and not necessary

 

[Mattl22]

It’s apogee
I bought 2 azure I think they called to try and they look horrible gonna replace with blue +
Seems like most sps guys going with 2 coral + in middle and the rest blue +

Should I go with 4 coral + to give it extra punch ?

Thanks guys any thoughts on maybe adding a fan to try keep it cooler?


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[Reefinny]

That's what I do. I just recently did 4 blue plus 3 coral plus 1 coral plus but like the 4 and 4 and 2x xho strips

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[Reefinny]

I have the 510. Matt feel free to come by and check out how mine looks.

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[Mattl22]

Hi ty been meaning to get out to see ur set up ty for the invite I believe I still have ur #


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