How long do you sps keepers keep MH on?

[jarrett shark]

I am trying to have all sps tank and I see great tanks out there but not sure how long the MH are on. Also Actinics how long do you keep on?

MH 10am-4
Actinics 7am-7pm

i am starting growth but not were i want to be in 6 months.
I know there is people who say to put on for 9hrs but dont want to burn any sps

thanks

 

[Slim_jim989]

MH is fine but the actinics i would shorten to 8am-8pm. but it looks fine. I used to run my MH for 6 hours a day. do you have 250 or 400 because I had 400's

 

[sedorusc]

do you mean 8-6?

 

[Radioheadx14]

6 hours a day and I do not have supplemental lighting.

 

[Piazzon12]

5 hrs 250 Hamilton 14Ks, 9 hrs VHO

 

[mark54321]

actinics 11Am-11PM
MH split NOON-4PM, 6PM-9PM ( total 7 hrs)

 

[Acezwild]

10am-10pm LEDs 12pm-8pm attinics 2pm- 6pm MH 250w radiums on 18" deep tank

 

[Thairun]

My 12kK reeflux 2x250w SE Luminarc 7hrs in between 12hrs 2X80W t5 coral blue and actenic . Another centred 14kK BLV 250W SE luminarc run 6hrs in between all lights. MH 14in above water. Give me good growth.

 

[Tater11]

halides 10hrs for me.

 

[Guillaume]

2XPC 65W actinic 7:45-20:30, MH 150W 14k 10:00-17:00 and I'm thinking to increase time of MH.

 

[Reefer08]

Im at 7 1/2 for my 400w halide and 9 hours actinic

 

[nvdiz]

8 hours using 250w 14ks

 

[losthere]

7 hrs

 

[buy_baff]

6 hrs 2 250w 14k

 

[UWUALineman]

5 Hours for 3 400W Radiums w/ 2 110VHO actinic during that time frame.
Various other VHO lighting throughout a 12 hour period from 8AM to 8PM

 

[IFbettas]

5 hours with no supplemental lighting.

 

[DT's_Reef]

250w Radium in a Lumenmax Elite fixture, Galaxy ballast (electronic), over a 20" tall tank, 8.5 hours a day.

I used to run it 5 hours but my SPS began to have issues (poor color), and quickly turned around once I increased the photoperiod.

Photoperiod can be tricky because it also can depend on the ballast and reflector used. I would also venture a guess that factors such as in-tank flow and nutrient levels also impact things (e.g., if a coral can't get the nutrients it needs because and the light is saying, "Grow fast, now!", there will be issues).

I would experiment over time to see what works best. You're not going to kill your SPS by having a shorter light period to start, and then you can very slowly over weeks, increase it and exam the effect.

 

[plyle02]

6 hours mh and 10 hours supplement t5's here...

 

[darnocobra]

4 hours mh and 10 hours supplemental PC's

 

[mayjong]

6 hrs MH, 11 hrs actenics