When I want to use reverse grid, it requires to buy some coin, but I want to use reverse grid only using usdt.

In descending market I need to use reverse grid not grid bot

Even in short trade: there are not possibility to select all coins

It is another matter prevents us from benefitting via short trade

Answer

Use grid bot for this one, it is the same mechanics with reverse grid. Reverse grid difference only make notation in tokens not in base

Reverse and grid bot have same concept of buy and selling.

The difference is grid bot will show your profit in usdt compared to you buy all tokens and sell when it close the bot. Meanwhile reverse grid show your profit in tokens compared to you buy all tokens and not selling when it close the bot

Reverse grid is not a short bot

Use margin grid instead if you want to profit when price depreciated

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