When you own a pool in Montgomery, the finish on your plaster or marcite eventually gets tired. Algae stains won't budge with regular brushing. Calcium deposits build up. The surface loses that smooth feel and starts to look dull. At that point, most pool owners wonder whether a bead blast or acid wash is worth the money, and how long the results will actually stick around. The honest answer is that both methods work, but they solve different problems and last different amounts of time. What you choose depends on what's wrong with your pool and how much money you want to spend.
What Bead Blasting and Acid Washing Actually Do
A bead blast uses fine glass beads shot at high pressure to scour away algae, mineral deposits, and surface stains without eating into the plaster itself. Think of it as aggressive cleaning. An acid wash is stronger. It dissolves a thin layer of the plaster to expose fresh material underneath, removing deep stains and discoloration that bead blasting can't touch. Both methods leave your pool looking cleaner and brighter, but they work by different means.
How Long a Bead Blast Lasts
A bead blast typically gives you two to three years of noticeably improved appearance before staining and algae start creeping back in. The exact timeline depends on your water chemistry, how often you brush, and how much sun your pool gets. In Montgomery, our heat and humidity work against you. Algae loves warm water, and sun exposure darkens mineral stains faster than in cooler climates. If you keep your chlorine levels steady and brush regularly, you might stretch closer to three years. If you let things slide, you could see visible staining within eighteen months.
The big advantage of a bead blast is cost. It's gentler on the plaster and runs significantly less money than an acid wash. If your pool has minor staining or light algae discoloration, a bead blast often does the job well enough. You'll get a clean, bright pool without the expense and downtime of more aggressive treatment.
How Long an Acid Wash Lasts
An acid wash typically lasts four to six years, sometimes longer if you stay on top of maintenance. Because it removes a layer of plaster and exposes fresh material, you get a deeper clean. The stains that come back are usually lighter and take longer to set in. In the Montgomery heat, you might see some color return after four years, but it won't be as dark or stubborn as what you started with.
The catch is that acid washing is harder on your plaster. Every acid wash removes a thin layer. If you do it too often, you'll eventually reach the underlying aggregate or concrete. Most pools can handle an acid wash every five to seven years without trouble, but if you acid wash every two years, you're shortening the life of your plaster. We usually recommend it only when bead blasting won't cut it.
The Real Difference in Your Pool
The choice between the two often comes down to what you're actually looking at. Light green or brown staining that stays on the surface responds well to a bead blast. Deep stains that won't come off with brushing, or dark discoloration that goes into the plaster, need an acid wash. If you've never had either treatment, an acid wash gives you the most dramatic improvement and the longest-lasting results. If you had an acid wash three or four years ago and things are just starting to look dingy again, a bead blast might be the right call to refresh things without the bigger expense.
Keeping the Results Longer
No matter which treatment you choose, how long the results last depends on what happens after. Run your chlorine between 1 and 3 ppm. Brush the walls and floor at least twice a week, more often in summer. Balance your pH between 7.2 and 7.8. In the Montgomery area, our hard water means calcium deposits form faster than in softer water regions, so pay attention to your alkalinity and consider a sequestrant product if you're prone to scaling. These steps won't prevent staining forever, but they slow it down considerably.
When to Call a Professional
You can brush your pool and manage chemicals on your own, but bead blasting and acid washing require equipment and expertise. A bad acid wash can damage your plaster or leave it uneven. A bead blast done wrong can wear through thin spots. This is work for someone who knows pool finishes and has the right tools. We've seen plenty of pools where a DIY attempt or a cut-rate job created more problems than it solved.
Pool Maintenance Pros LLC has been handling this work in Montgomery long enough to know what your water and climate will do to a finish. If you're thinking about refreshing your pool's appearance or you're not sure whether a bead blast or acid wash makes sense for your situation, give us a call. We'll walk you through what's actually happening with your plaster and what option will give you the best result for your money.
