Go with your gut.
Practice on some scraps from the Hardware store.
Pretty sure its normal to get cold feet before first drilling, but so much success and how -to info has inspired me to try it.
Even if you drill, you can still use as planted with sump also. Same concept as Reef.
I agree, it is tough to choose, and heavy risk to not take lightly.
@ $50 bucks per 200g of mix (IO/orRC)
@20g. Per 2 weeks = 500g =
$150 salt per year.