>>12574215>>12574357You can use Calcium Hydroxide but it has a lower pH than that of Sodium Hydroxide. You would be better going for Sodium Hydroxide at pH 14 to for sure get the job done.
Alkali Metals>Alkaline Earth Metals
Plus pic related is 100% NaOH. What's in that 98% CaOH, 2% Silicon Dioxide? Rather not chance contamination...
Just do a straight to base extraction. Look up Hamilton's Pharmacopia DMT extraction, a guide on DMT Nexus, or another YT channel. Do not add too much water and evap on flat pan for maximum surface area.