my 500 gallon reef tank

[steve the plumb]

Originally Posted by asmodeus

works great for me Steve, so 118 Par for the reef tech and that is 2 " from the water line. That is if you had a bare bottom tank right. So people with 2-4 " would get better Par readings correct. Can ya give us a look at by using the par gauge and raising it up 1 " at a time to show us what numbers that you get.

Par at the bottom of the tank was between 125-138. I have hardly any sand in the tank.In fact because of my PH most of the front of the tank has no sand.I have around 60 pounds of sand in this tank.That's a joke for a 500 gal tank.Its like 2 buckets of salt.I had a good 300 pounds of sand in my 300 gallon.