Lighting

[Rmckoy]

I have a 90 gal dt with a 8 bulb t5ho fixture 5” above the water .
About 6 months ago one of the ballast went causing only 4 bulbs to work .

it’s worked but I think it’s been only bare min
I’m adding a new ballast this evening .
My question is , adding the 4 bulbs to get the fixture back up to full lighting , will that effect the corals ?

 

[Webslinger]

Corals use light so any change will affect them.

 

[Rmckoy]

Essentially .....
I’m doubling the light back to its original 8 bulbs but it’s been months running on only 4 bulbs .
I believe I’m under par if applying wattage per gallon

 

[Rmckoy]

Anything I should do with the corals before turning on the other 4 bulbs ?

 

[Gungo]

Nothing to do with the corals, just place the fixture higher above the water surface, maybe 12" to start with.

 

[Rmckoy]

Nothing to do with the corals, just place the fixture higher above the water surface, maybe 12" to start with.

Right now it’s roughly 6” above the water .

 

[Gungo]

Thats pretty low to add 4 t5 bulbs. Raise the fixture

 

[Halo_003]

Not a T5 pro here, but could you just do something like add a bulb a week to acclimate everything slowly?