Originally Posted by neeker4
Matt, I was re-reading your post and have a few questions. First, what is PAR? Second, where would I be able to find an ATI bulb? Last, what corals could I expect to keep with these bulb upgrades?
PAR refers to the amount of usable light for the coral. Less PAR means less usable light for the coral. PC
is less than t5 and t5 is less than MH
. This is all relative to the bulb used, brand, and such, but still a good estimation of what to expect from a certain bulb technology.
ATI t5 bulbs are one of the best t5 bulbs out there and have a LOT of PAR whereas other brands have less.
Actinic bulbs (420nm) have much less PAR than the rest of the color temperatures available to us. ATI blue plus are similar to actinic bulbs, but have a tremendous PAR.
You can get ATI t5 bulbs from marinedepot.com as well as many other online vendors.