in my opinion there is no reason why Ethereum prices crashed 10% in 3 hours, because the price of Ethereum has gone down too far, from the initial price of $1300 to $125 last month and now the price of Ethereum has dropped by 10% in 3 hours and I think it's reasonable for now, even I'm sure the price of Ethereum will still be able to go down again and I'm sure to make the price of Ethereum recover (increase again) that takes a long time (estimated 2-3 years).