cham
New member
I have a 28" tall tank and I am looking for better light penetration out of my twin 175w MH lamps. I have Giesmann T5's and URI Vho's that help my PAR but I didn't realize how bad the XM 20k wouldn't penetrate!
I see the Iwaski's are at 86PPFD compared to the XM at 35 PPFD.
What a difference but is it worth $80 PER BULB?!!?
Mostly SPS tank.
I see the Iwaski's are at 86PPFD compared to the XM at 35 PPFD.
What a difference but is it worth $80 PER BULB?!!?
Mostly SPS tank.
