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I'm not surprised by the ammonia or nitrite. No big deal. You will probably see a drop to zero within 5 to 7 days.

I notice your water surface has a film of organic waste already bonding to it. You are going to want to aim some water flow towards to surface to improve gas exchange, and hopefully keep the organics suspended for removal by the skimmer.

I had this same problem in the past with hang on skimmers that do not have a surface skimmer attachment. I found the best solution was to simply do a very small water change every week, with the syphon tube angled upward towards the surface, sucking the surface film off.
 

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Tank is looking nice!

What do you use to stack your rock? I've seen aquarium safe putty and also pins.
 
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