New poster here. Need some help sizing a pump. I am not a well guy but a mechanic . Not scared to tackle the job but lack the knowledge and experience with wells. Also trying to learn what I can from this board. Lots of good info here. May be kind of long so bear with me and take it easy on me. I have a 4 in well used for irrigation, 2 garden sections with drip irrigation and 8 sprinkler heads throughout the yard. I do not know the age of the well. It is 4 in pvc casing. Seems to pump a bit of very fine sand(almost like silt) but water is very clear. Last fall the pump went out. Had my well guy who lived next door replace the pump. The old pump was a Grunfos brand. Labeling was almost unreadable except it looked to be 1.5 hp and could not determine the gpm rating. I decided to cheap out with a 1 hp pump, 10 gpm. Knew within a couple weeks that that was not enough volume from what I had before. Used the same Grundfos brand as he said it would tolerate the sand better than the other brands. He was working on finding me a replacement pump head with more gpm, was going to do it for free for me. Short story at 54 years old he passed 3 weeks ago. So now I'm going at it alone. I pulled the new pump and checked my well as there are no records on it at all. It is 62 ft deep. Water level is at 22 ft deep and the pump is set at 48ft deep. So I have roughly 25 ft of water. I don't know what the gpm rating of this well is. I do know that the old pump would run 3 sprinkler heads and cycle on and off. Couldn't keep up with 4 going at once. These are just the regular Lowes type cheap replacement heads. The well never once acted as if it was overpumped, even with 4 heads going at once. The new 1hp pump will barely cycle off with 2 going, 3 is just too much. I know this is long but I feel the more info I can give the better you guys can answer. I have been looking to just replace the whole pump again and install a Grundfos 4 in. 1.5 hp rated at 16gpm. Does this sound like a good choice? Also wondering is there anyway to pump the silt from the bottom? It feels like it may be about 8-12 in. deep. Thanks.