That's a great looking aquarium, Sergey! And, on the topic of language, you are doing much better, in English, than I would be doing in Ukrainian! I'd be relying on Google Translate, and some of the Google translations I have done from other languages into English have been pretty messy! Welcome. Glad you're here!Hello, I am Sergey from Ukraine, Kiev.
My tank 1500х600х700, clean water about 127 gallons, CO2, LED lighting. The aquarium is young, because the plants often have to be transplanted until I get the right quantity and quality. Sorry for my English, just starting to learn.
P.S. I love the variegated Hygrophila polysperma! I relied, a lot, on the vigor of the plain green H. polysperma, back in the 1980s, before I had CO2, and before the plant had been banned in many US states as a noxious and invasive weed. I get it about invasive plants, but I still miss the H. polysperma! I am given to understand, though, that the plain green variety is so vigorous a grower with CO2 that many aquarists won't use it!