Thread Split - Woot!
Anyway,
Lowfi, almost any cement will work. If you really want the white portland, be aware that it costs usually twice what the grey does. Find a masonry supply place in the yellow pages - they will have it if anyone does - I've yet to see "specialty" cements at a Big Box Store like Lowe's or Home Despot. If they don't, ask for Type 5, which is formulated for marine use. And then if they don't have that, use whatever you can find.
And as long as you got the
crystals, then you got the right stuff - pellets and cubes can be used for doing specific holes and the like, but the crystals are what you mix in as an aggregate...
HTH
