Reading wazifahs for cure

I have some health problems like skin infection and a hump on my back which is not responding to medicines well. I doubt it is nazar. On someone's advice I took a bucket of water out of the bathroom and then put my hands upto my elbows in it and read 7 times durood, 7 times surah fatiha, 7 times aayatul kursi, 7 times Quls and 7 times durood. I did not blow on the water, I just took the bucket in bathroom and poured that water on my head. I did it twice and found alot of improvement. Can I do this?