-Logzor
2500 Club Member
Looking for some advice regarding MH placement and lighting duration. I'm running a 250w MH lamp (Sfiligoi) over a 40G Breeder as a frag system.
What is the ideal distance of the light from the water level and the depth of the frags and total light duration? I have the option to run four 24" T5 bulbs in combo with the MH but I currently have the T5 turned off.
Initially I had the face of the light about 19" from the water, then my frags were about 5" under the water line. The corals I had under there bleached pretty bad and eventually died, even with a 3-4 hour light cycle. Although, they were in rough shape to begin with.
I'm more or less starting over with frags, most of them were not salvageable, so I want to make sure I get it right this time. I removed the posts from my frag rack allowing the tray to sit 13" under the water line.
19" is the highest I can raise my light but I'm flexible anywhere from 5" deep to 13" deep for the frag tray. I can simply cut the PVC supports to the desired length or remove them entirely (13").
Any advice would be greatly appreciated, I'm a T5 guy so the MH I'm still getting used to.
What is the ideal distance of the light from the water level and the depth of the frags and total light duration? I have the option to run four 24" T5 bulbs in combo with the MH but I currently have the T5 turned off.
Initially I had the face of the light about 19" from the water, then my frags were about 5" under the water line. The corals I had under there bleached pretty bad and eventually died, even with a 3-4 hour light cycle. Although, they were in rough shape to begin with.
I'm more or less starting over with frags, most of them were not salvageable, so I want to make sure I get it right this time. I removed the posts from my frag rack allowing the tray to sit 13" under the water line.
19" is the highest I can raise my light but I'm flexible anywhere from 5" deep to 13" deep for the frag tray. I can simply cut the PVC supports to the desired length or remove them entirely (13").
Any advice would be greatly appreciated, I'm a T5 guy so the MH I'm still getting used to.
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