I have a 30,000 gallon pool that I renovated about 7 years ago. The pool builder added on a 15 ton waterfall and replastered the whole pool with Sunstone plaster. A couple of years ago, I noticed the plaster was beginning to crack on the wall under part of the waterfall (see pics). I thought it may be due to the fact that we had a bad drought that summer. ??? Anyway, the pool doesn't seem to be leaking as far as I can tell, so I have let it be. Now it has gotten really noticeable and I'm starting to worry that it may eventually become a big problem. The last thing I want to do is have to replaster the whole pool!
How can a crack like this be repaired? And does anyone know of someone in the Houston area that can repair something like this? I'd like to get some estimates.