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A few questions 

1) how are tick spaces determined when deploying a pool? 
Is there a sort of common number thats just fine for most cases? 

2) i understand that the price shifts whenever y / x moves in the tick range. 
But different pools across all of defi have different ratios. How do

devrel / solutions engineer & independent researcher

prices remain consistent across different AMMs? Do they just rely on arbitragers to exploit the discrepancy until its fixed?

haardik.dev | Founder @learnweb3 | lead instructor /uniswaphooks | building @openfarcaster

Ok this feels a little counter intuitive actually. I'm guessing that the fees on the pool affect the tick spacing because you want to optimize for just how much value lps are extracting on swaps?

The tick spacing is determined by the fees charged in the pool for swaps, actually. Fees is represented in basis points (0.01% increments). (fees / 200) = tick spacing (or, tick spacing * 200 = fees)

So for a pool which wants 0.3% fees = 3000 bps, tick spacing = 15