I have a question about multiple sparges. The forum seemed to say that too much sparging will cause astringency. My concept of mashing is to convert the starches to sugars, and sparging is to retrieve more sugars from the grains after the mashing run off. I have a Brewzilla and circulate the...

I have a recipe that calls for both pellet of one hop variety and Whole/Leaf pellets for another variety. Where I live, whole/leaf hops are not to be found except by way of mail, and in my case, not a viable solution. Can I change the whole/leaf hops to pellet and what is the conversion rate?