They will ramp up quite fast after completing Campaign. You get 300 for free from legendary difficulty, and then in general; [quote]- Terminal Overload -public event 75 (100 if in Vex Incursion zone?) - High-value Targets, around 12 each - Zone patrols 7 each - Heroic Public events 30 each - Any Strand final blows have chance to drop them on ground (Strand coloured pick up)[/quote] Unlike with Stasis fragments, you don't even need think about them. Just generally playing in Neomuna, getting the reputation up for unlocks will net you hundreds of Strand Meditations before you even notice.