Hello everyone.
I’m dealing with a leaky pipe under my kitchen sink and could use some advice. The leak is coming from a small crack near the elbow joint, and I’ve tried tightening the fittings, but it hasn’t worked. I’m wondering if using plumber’s tape or a sealant might help, or if I need to replace the pipe entirely. 
I’ve heard that Liferaplumbing offers great services for situations like this—has anyone used them before? Should I act quickly to avoid water damage, or is a temporary fix okay? 
Any tips on tools or advice would be appreciated! Thanks!