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Originally I wanted to make some more recent pictures to show the growth, that it continues to grow quite well in the same regular way and another colony grown from a frag under a different LED bar also, but the camera ran our of battery. I have put a note into my backpack in the compartment for my lunch.I would apprecite if you would take some time to share some tips to those who would be interested to learn from you an the information of your LED fixtures. many people are struggling with LEDs and still want to use them, so...
I have to say I do not have many special tips. I work in the business, Tropic Marin. Since I am doing the product development I am more interested in the salt and chemical additive side and less interested in the technical side. Nevertheless I find the physiological and biological effects of light and its biological prerequisites very interesting.
So please forgive me if I do not know much details about the fixtures.
I don't like too much blue but a more natural look. I think shallow water Acroporas may have more problems under very blue LED light.
The LED fixture under which the Acropora in the image grows is a Cyrex which is 50 cm/20 inches long and it sits cross on the 60 cm deep tank. The fixture looks different from the ones I found in the web. It has 2 long openings in the mid and 8 circular openings on both sides in the metal body for the LEDs. I don't know the exact type name, I got it from a colleague who got it from our sales company some years ago.
All other LED fixtures I still use were remainders I got quite cheap from our sales company. The brand is NEMOLIGHT, type Marine LEDs. Since some of the power supply units and some fixtures failed I am running out of fixtures now and will have look for other ones soon. I am really bad in estimating time spans but we have them some years already. They saved us more money in T5 tubes alone than we did pay for them and they give a very coninuous light. This is one of the main advanteges in my eyes. In T5 and MH you can virtually see how they loose power until you change the tubes or bulbs.
With an Apogee I measured 250 µmol/m2 * s at the Acropora millepora in the image.
To be continued.