Hi!
Time for an update.
I have now had my 2 x Radion Gen 2 over the tank since May and I am really happy with them so far. The ability to dim and change colors during the day and night has added a lot of variation to the tank and that means that you spend more time looking at the tank. The lighting effect is also a cool aspect. I was a bit worried that they would not cover the length of the tank, 165cm, but I have them around 60 cm above the tank and this gives good spread and sufficient penetration. The spread seems better than with my 2 x 250w MH with lumen arc reflectors and that was a pleasant surprise. The heat was becoming an issue but after the switch to LED it has not a problem although I probably will install an extra fan before next summer to cover the heat peaks. I have kept the 3 x 80w T5 lamps as it lights up the side of the pillars better and adds to the total wattage required.
I change about 20% water monthly, clean algae twice per week and change balling once a month. I have had no animal pests or problem with algae since the start so I count myself very lucky. The growth is good enough although a third LED would give a better spread. The clam in the lower right corner is growing nicely so I guess the light is sufficient. Maximum growth has never been the main goal of this setup and I want to keep the aquascape and open spaces.
Kim had a nice selection of healthy fish so I purchased 4 new during the weekend including a powder blue tang (PBT), two percula clowns and one sand sifting goby, Amblygobius phalaena. They have managed well and are all active and healthy. The PBT is quite a lot bigger than the four Zebrasoma flavescens and they seem to get along well and are now swimming together. I will not push my luck with adding more tangs though. No pictures from the new crew yet.
I am still looking for interesting corals, especially SPS so let me know if you have anything that needs trimming
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UPDATED SHOTS:
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