cob conversion

So I think soon I should be able to pull the trigger on finishing my upgrade to COB's. My idea is to use 5 bars each using 5 cobs spaced approx 12" on center on each bar then have each bar approx 12 inch away from the other bars effectively getting 1 cob per sqft. in a 5 x 5 space. My first bar...

Hey everyone, I am needing some help here.I have 3 working marshydro led fixtures but would like too convert too cob style lights.I took a couple pics of my marshydro reflector48,and pro II 80 and need help choosing which cobs i can use too convert these lights.I did a search and couldnt find...