Yes, it is possible to deposit funds from Harmony into a Curve pool. However, it is important to note that it may take some time for the rewards to start accumulating. This is because the Curve pool needs to be filled with enough liquidity for the rewards to start appearing. If you have already been in the pool for 8 hours and have not seen any rewards, then it is likely that the pool does not have enough liquidity yet. To help increase the liquidity, you could consider adding more funds to the pool or encouraging others to join the pool. Additionally, you can check the pool's APY to see if it is competitive compared to other pools.