Jumping in to alleviate any potential confusion for other viewers- I think the formula written here ((sqrt(n)*effect size)) may be incorrect.

If trying to calculate a t threshold from hedges g (called d), the relationship is d = t * sqrt((n₁+n₂)/(n₁*n₂)) which translates to t = d * sqrt((n₁*n₂/(n₁+n₂))