Recently introduced building – metal well and crystal lake, they were corrected.
Significantly reduced energy costs at lower levels and significantly increased production at lower levels of these buildings (about 3 times).
At higher levels the increase is seen less. (The formulas are in buildings).
In general, buildings are very useful for all new players now.
They almost double the initial production, making the process of exploring the game better.
Metal well now occupies 1 field (all levels) and the lake is still the same.

crystals lakes still has no icon will be fixed?

Crystal lake is a new building in the implementation process.
The building has not entered yet. It still has no icon of itself.