Are they reputable? This may seem like a rude question to ask a plumber trustworthy drain leak repair but it is important because you are going to be letting them into your home. Ask them for references and many of them will be happy to provide some. Most plumbers understand that you have to be careful who you let into your home these days and will do everything they can to ensure you that they are indeed reputable and can be trusted in your home.
However, there are huge distinctions between different fiberglass pools. (They are not all created equal.) Vinyl Ester resin is a must! This material is a bonding agent that helps hold the pool together. Vinyl Ester also prevents cobalting, which is a black or purple stain that forms from the outside in. It is a chemical reaction within the fiberglass itself. The stain can usually be removed but will continue to resurface. Make sure you see it in writing that the pool has Vinyl Ester. If it's not advertised in print, chances are it doesn't have it.

This around the clock availability leads to the second thing to look for in your rescue personnel. Are they available at all hours? Saying you are and actually local water heater repair service picking up the telephone are two different matters. Do they offer at least two numbers, one for regular business hours and one for after hours? That is what you are looking for. And if they advertise dispatch vans, all the better for speedy replies.
If you're working with several people, it would be good to take different sections in wetting, scrubbing and rinsing to complete the whole acid wash pool maintenance faster. Make sure you get the pool completely covered. Check to ensure all of the walls and the floor are completely acid-free.
Fiberglass pools never require draining for cleaning, which is a huge chore. In addition, to clean the fiberglass surface, all you need to do is vacuum the bottom of the pool, which takes only 10-15 minutes a week. At first you might think that concrete/gunite pools are the most stable however fiberglass pools can flex about two feet without sustaining any damage slow drain and can safely withstand more external pressure than concrete/gunite pools.
The first and most important thing to do any emergency is to CUT OFF THE WATER SUPPLY. Once this is done, you can take time to locate the problem and do something about it. Now, before you really have to, make a tour of the house and locate the water cut-off valves. Make sure everyone in the family is familiar with them.
A reputable plumbing service will often make suggestions when you initially contact them. In the case of a clogged drain, for example, they have seen hundreds or even thousands of cases just like yours and they know that most bathroom sink clogs are the result of by hair building up in the drain. Accumulated hair can create a plugged drain and it can be a fairly straightforward job to loosen up the clog and have a free flowing drain again.