" h1 x, Q9 T$ l! |7 g3 S" p(DIY) buy at HD, apply leak seal from inside OR! x/ F; r3 k2 |* c7 H
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hire some professional company that armed with high pressure injection equipments to do the leak plug.
% N9 s) I2 Y6 L/ a3 n0 T6 k! Ishould work, high pressure injection is the best and have lifetime warranty. " t$ V8 l8 G+ E9 L6 k" e1 G c) J* P! p; l/ z9 x4 {hairline cracks not going all the way through wall is not unusual, 8 f) E6 C- N* W2 }7 E8 L
h8 ]) A P' K- u; P4 r* b, Mbig crack is rare, if possible, I rather back off