If you’re worried about scratching the metal on your aerator, put a rag between it and the pliers.
Make sure your sink is plugged so you don’t lose any pieces of your aerator. Only use a toothbrush meant for cleaning purposes.
You can also use a lime cleaner like Formula 409.
If the aerator still gives you trouble, try buying another one from your local hardware store. Make sure it fits the model faucet that you have.
You can also remove the aerator from the handle to clean it as well.
If your faucet still has low water pressure, then you may have a problem with your supply line or pipes.
Make sure both of the valves are all the way on so you can control the water temperature easier.
Try turning the valves completely off and back on again to see if it fixes the problem on its own.
Put a towel underneath your sink in case any water spills.
Clean underneath your sink so you can easily fit a bucket directly under the supply line.
If your faucet has 2 handles to control the water temperature, turn them both the same amount.
Once both lines are flushed, the water pressure should be back to normal.
