Hello and many thanks of your comments of our nano. The tank is certainly been taken care by me and my son together

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The tank was set up over 6 months ago. First there was the sand and live rock, in couple of weeks two clown fish was added. First corals were fungia and Seriatopora hystrix after about month. All the corals have been in the tank at least three months. The grow rate and the colours have been almost as good as in my main Zeovit tank during that time.
The main thing in succesful nano keeping just like in all reefkeeping is to maintain nearzero dissolved nutritient levels in the water. This is achieved in our nano with iron based phosphate remover and Seachem denitrate and activated carbon. I suppose that maybe some carbon based food for the bacteria is bond to the denitrate, because about two weeks after starting it, there were bacteria films in our nano in many surfaces, and a lot of gas bubbles (Nitrogen I suppose) rising from the sand bed and from the canister filter and the nitrate value of the water lowered quickly. After some weeks bacteria films slowly disappeared. The coralline algea grows very slowly in our nano just like in my main zeovit tank. There is many macroalgea species in the nano, and they also grow quite slowly.
The low nutritients could not be maintained in our tank with 20% water changes even when it was done every week (now it is done once every 2 weeks). The tank is guite small and there in three fish in it. Both phosphate and nitrate rose to dangerous levels to corals. Nitrate was 20 - 30 ppm. After 1 month with denitrate it was 0 according to two different aquarium test kits I have.
When I started my reefkeeping over ten years ago, I kept succesful reef aquariums for years with NO fluorescents only, and I can say from my experience that it really is possible to do so. You need a lot of tubes of course, but with about 1w/1l (4w/1gallon) of light, you can keep and grow almost all photosynthetic corals and also get good colours also with NO tubes.
Yours
Marko
