SPS ligthing

[zorden]

Need to know how many hour of MH do you guys on..

when u never on your MH, what other light is there to substitute it...

my father going to install a mh over my marine tank...soon,,,

so need to know this answer,...

and btw...can we just on MH when we like and off it.. >> this method dosent work well with SPS rite...

[dr evil]

average operating hours is @ 8hrs. we normally suppliment with actinic which normally run longer hrs...

on off the MH can cause stress to ur fishes n coral.

make sure u have a chiller when running a MH....it can be very hot

[zorden]

i am persuading my father who is my co partner in setting up a marine tank to get a timer...

he say just need to on and off can liao...

i think its better to have a timer....

well....how much is a actinic light for a 3 ft(ht) * 2.6 Width * 3 ft length tank?

what is the suitable size..need to convince him with facts and figures

[AlfaRomeo]

Me personally run my MHs for 10 hours and Actinics for 12 hours... Lighting cycle start from 10am to 10pm so fishes can go to sleep and rest from 10pm till morning which is more than 8 hours of sleep ... hehehehe...

[zorden]

ok..but how much is a actinic light... 3 ft tank...

[AlfaRomeo]

Look at the sponsors webpages to get a rough guide...