Ira Posted February 14, 2006 Report Share Posted February 14, 2006 Hmmm, Mine are on for 12 hours. If I cut that down to 8 hours they won't be coming on until 3:30pm! Might drop it down a few hours though. Quote Link to comment Share on other sites More sharing options...
Fay Posted February 14, 2006 Author Report Share Posted February 14, 2006 Steve you take terrible photos I love that coral hope mine goes like that it has a bit of purple peeping out Quote Link to comment Share on other sites More sharing options...
lduncan Posted February 14, 2006 Report Share Posted February 14, 2006 This is the monti that many of you have seen in my tank when it was brown, loves the light I have one similar which was about as brown a coral can get when I bought it, now it's turning a solid purple. Quote Link to comment Share on other sites More sharing options...
reef Posted February 14, 2006 Report Share Posted February 14, 2006 i have one that is solid orange. not too hard to keep colours on them. They call them SUPERMAN DANAE Quote Link to comment Share on other sites More sharing options...
lduncan Posted February 14, 2006 Report Share Posted February 14, 2006 The superman danae is bluish purple base with brick red polyps. I had one, until the monti eating nudibranchs killed it. Quote Link to comment Share on other sites More sharing options...
reef Posted February 14, 2006 Report Share Posted February 14, 2006 Steve you take terrible photos He need one of these as reviewed The $99 Wal-Mart Special - These cameras have those snazzy LCD displays, offer live previews and are so easy to use even a 1 year old child can take cool photos. When my daughter sees something she likes, she simply flicks on the camera, waits for it to startup, frames her shot and fires away. Most of her photographs come out with decent quality Quote Link to comment Share on other sites More sharing options...
SteveA Posted February 14, 2006 Report Share Posted February 14, 2006 The potential problem with shorter photoperiods is that our lights are still generally not all that intense compared to the real thing. This is why I periodically toy with the idea of replacing my 4 x 400 setup with a 2 x 1000 setup that moves slowly along the tank over an 8 hour period. The current evolution of the plan, largely due to the variety of 400w bulbs available compared to 1000w ones, is to have two sets of 2 x 400 moving down the tank. Steve Quote Link to comment Share on other sites More sharing options...
lduncan Posted February 14, 2006 Report Share Posted February 14, 2006 The potential problem with shorter photoperiods is that our lights are still generally not all that intense compared to the real thing. Steve I don't think that is entirely correct. Lighting tests have shown that many 250Watt 10k halides put out close to the PAR found on the reef at midday cloudless sky at 5 to 10 meters below the surface. Layton Quote Link to comment Share on other sites More sharing options...
jetskisteve Posted February 14, 2006 Report Share Posted February 14, 2006 wish my tank was 5-10 metres Quote Link to comment Share on other sites More sharing options...
lduncan Posted February 14, 2006 Report Share Posted February 14, 2006 ...equivalent to the suns intensity at 5-10 meters below the surface on the reef. Quote Link to comment Share on other sites More sharing options...
Aquagold Posted February 15, 2006 Report Share Posted February 15, 2006 Re; Ultimate Marine Aquariums by Micheal Paletta He states some averages from the 50 tanks in the book so here goes; Of the 42 tanks housing SPS corals 20% only used MH lamps. 12% employed fluros exclusively. 6.45 watts per gallon. 9.8hrs photoperiod. He has six pages analysing the data collected in the book at the start. Quote Link to comment Share on other sites More sharing options...
reef Posted February 15, 2006 Report Share Posted February 15, 2006 Good book. However Many of the photos are quite old. Quote Link to comment Share on other sites More sharing options...
Ira Posted February 15, 2006 Report Share Posted February 15, 2006 What I'd like is an approx brightness at given water depths than knowing what other people have. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted February 15, 2006 Report Share Posted February 15, 2006 Hey Guy's interesting topic. I currently run my MH's for 7 hours with supplemental flourescents running for 12 hours. It seems to be a trend amongst the European Reefers at the moment to run for even shorter periods, some of them for 4 hours. I read recently, and I wish I could find the link now - think it was on RC that we overlight our corals. A survey revealed that they need time to "rest" from photosynthesising and that 6 hours was more than what was needed. Nightlights are also considered to be adding stress to the corals as minimal as it seems. Quote Link to comment Share on other sites More sharing options...
Fay Posted February 15, 2006 Author Report Share Posted February 15, 2006 Interesting Ira this could one of your problems Quote Link to comment Share on other sites More sharing options...
reef Posted February 15, 2006 Report Share Posted February 15, 2006 It seems to be a trend amongst the European Reefers Quite true , they also have the best tanks so it makes sense to take note of the trends in europe and out west auckland This was also discussed by cookie sometime ago as a book he had mentioned the same thing that we are overlighting our corals. Quote Link to comment Share on other sites More sharing options...
Fay Posted February 16, 2006 Author Report Share Posted February 16, 2006 reef Joined: 01 Aug 2002 Posts: 2110 Location: auckland Posted: Tue Feb 14, 2006 10:40 pm Post subject: -------------------------------------------------------------------------------- i have one that is solid orange. not too hard to keep colours on them. They call them SUPERMAN DANAE GOT A PHOTO OF IT Quote Link to comment Share on other sites More sharing options...
chimera Posted February 16, 2006 Report Share Posted February 16, 2006 you should consult the great goricle in these circumstances fay doesnt look solid orange to me but maybe come in different colours... Quote Link to comment Share on other sites More sharing options...
wasp Posted February 17, 2006 Report Share Posted February 17, 2006 After reading the thread on Zeovit.com about lighting hours & colouration, a few weeks ago I cut my photoperiod from 10 hours to 8. Don't know if it's coincidence, but over the last week or so there has been an improvement, and intensification, of colours. Encouraged, I have further cut the photoperiod by another hour, to 7 hours. Quote Link to comment Share on other sites More sharing options...
Fay Posted February 17, 2006 Author Report Share Posted February 17, 2006 O.K. Giving 8 hours ago wish I found this out on the other side of summer :-? Quote Link to comment Share on other sites More sharing options...
Fay Posted February 18, 2006 Author Report Share Posted February 18, 2006 Now I have turned down the MH to 8 hours should I unplug the sensor thingy because when the MH go off my streams turn down? Quote Link to comment Share on other sites More sharing options...
JoeBlog Posted February 18, 2006 Report Share Posted February 18, 2006 ditch the sensor. I've never used mine. What's the point of reducing the flow at night. With the few streams that we have in our tanks now, we are not matching the flow of the ocean even when they are set on 100%, so why turn them down at night??? Quote Link to comment Share on other sites More sharing options...
chimera Posted February 18, 2006 Report Share Posted February 18, 2006 i use my sensor, just have the night mode on about 90% flow. that way it still creates small variations of turbulence at daytime. Quote Link to comment Share on other sites More sharing options...
Pies Posted February 19, 2006 Report Share Posted February 19, 2006 I agree with JoeBlog. I used to use mine just to add more randomness but have given up, more current is good, not bad, let the streams ROAR I say. Pie Quote Link to comment Share on other sites More sharing options...
SteveA Posted February 19, 2006 Report Share Posted February 19, 2006 Over the weekend I knocked 1 hour of each set of MH. Now at 7 hours per pair, with a 5 hour overlap. I.e. total of 9 hours made up of: 2 hours with 2 bulbs, 5 hours with 4 bulbs and 2 hours with 2 bulbs. Fluorescent lights are still on for 11 hours. Steve Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.