shaneo Posted August 1, 2006 Report Share Posted August 1, 2006 Simple question How many hours do you have your MH's on for each day? Do you guys with higher wattage have shorter light periods? Quote Link to comment Share on other sites More sharing options...
JoeBlog Posted August 1, 2006 Report Share Posted August 1, 2006 6 hours (3 x 250watt DE 10K) Quote Link to comment Share on other sites More sharing options...
puttputt Posted August 1, 2006 Report Share Posted August 1, 2006 each 400w is on for 10hrs, half an hour apart from each other. Quote Link to comment Share on other sites More sharing options...
reef Posted August 1, 2006 Report Share Posted August 1, 2006 8hours .4x 400w ,12k reeflux. 8x 54w of t5s floro on for 10hours. looking to reduce to maybe 6x 250wDe. Quote Link to comment Share on other sites More sharing options...
KP Posted August 1, 2006 Report Share Posted August 1, 2006 1x 250W for 7 hours at the moment until my rock mature or get some high light demand corals. Quote Link to comment Share on other sites More sharing options...
Ira Posted August 1, 2006 Report Share Posted August 1, 2006 9 hours. Quote Link to comment Share on other sites More sharing options...
buzzy Posted August 1, 2006 Report Share Posted August 1, 2006 what hours of the day do you have the MH's on?eg 11am - 8pm Quote Link to comment Share on other sites More sharing options...
reef Posted August 1, 2006 Report Share Posted August 1, 2006 2pm-10pm, t5s,1pm-11pm Quote Link to comment Share on other sites More sharing options...
JoeBlog Posted August 1, 2006 Report Share Posted August 1, 2006 2PM - 8PM Quote Link to comment Share on other sites More sharing options...
shaneo Posted August 1, 2006 Author Report Share Posted August 1, 2006 11am - 7.30pm ( 400watt 14k ) 7am - 10pm ( actinic ) Quote Link to comment Share on other sites More sharing options...
Warren Posted August 1, 2006 Report Share Posted August 1, 2006 12 Hours, 2 x 250W Quote Link to comment Share on other sites More sharing options...
jetskisteve Posted August 1, 2006 Report Share Posted August 1, 2006 12 hrs 1x 400w Quote Link to comment Share on other sites More sharing options...
Ira Posted August 1, 2006 Report Share Posted August 1, 2006 2pm-11:30pm. Quote Link to comment Share on other sites More sharing options...
KP Posted August 1, 2006 Report Share Posted August 1, 2006 11am -> 6pm Quote Link to comment Share on other sites More sharing options...
tel Posted August 1, 2006 Report Share Posted August 1, 2006 halides 8 hrs actinics 12 hrs Quote Link to comment Share on other sites More sharing options...
suphew Posted August 1, 2006 Report Share Posted August 1, 2006 First 250w comes on at 12pm, third (last) goes off at 10pm T5 blues are on from about 8am till 10:30pm Quote Link to comment Share on other sites More sharing options...
misnoma Posted August 1, 2006 Report Share Posted August 1, 2006 11 hours, 11am-10pm (I like seeing my fish at night ) Quote Link to comment Share on other sites More sharing options...
slappers Posted August 1, 2006 Report Share Posted August 1, 2006 4pm tp 11pm Quote Link to comment Share on other sites More sharing options...
rossco Posted August 1, 2006 Report Share Posted August 1, 2006 9.30 am to 7.30 pm. (10 hours) I know a lot of you folk have tanks in living areas where natural light will come in to the tank regardless of when you turn the tank lights on. Is there any harm in the fish potentially being active from 5 am (summer) to 10 pm or later??? Quote Link to comment Share on other sites More sharing options...
jetskisteve Posted August 1, 2006 Report Share Posted August 1, 2006 Funny they are in reefs all around the world??? Quote Link to comment Share on other sites More sharing options...
rossco Posted August 1, 2006 Report Share Posted August 1, 2006 Nope. My understanding is that most of our fishies come from tropical areas that are close to the equator eg Fiji. Being so close to the equator length of day is pretty steady year round. eg Sun gets up at 6 and goes down at 6. Of course there are differences the further away you get from the equator but not where the sun is up from 5 am to 11 pm! But then again, I never was much good at geography! :oops: I guess my point is that we can set the time we 'activate' corals with artificial light but wonder whats its doing to the natural clocks of the fish? Quote Link to comment Share on other sites More sharing options...
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