Cool video. I've never used a skimmer, but never felt the need for one. I always keep full lids on, and a healthy bubble stream, either from filters, air stones, or both. Right now, I have a healthy growth of duckweed on my Endler tank, as they benefit from it. It covers the tank and needs to be thinned out each time I partial the tank. I see your water wisteria is growing like mine is. I've started to trim it and gave the wife some for her tank. It gives a great place for smaller fish and shrimp to hide. Take care.