How to Clean Your Fiberglass Swimming Pool

Fiberglass swimming pools are growing in popularity because they are ready-made. They are also simple to maintain, long-lasting, and less expensive over time. Unlike concrete, fiberglass pools don’t need to refinish. And in this article, we check on how to clean your fiberglass swimming pool.

Fiberglass pools need few chemicals because it doesn’t affect the pH levels in the water much. There are pool-cleaning supplies that you can use to clean your pool.

With all the problems in a pool, it is always best to prevent stains in the first place.

How to avoid fiberglass pool stains:

  • Maintain your pool water chemistry.
  • Clean your pool on a regular basis.

How to clean your fiberglass pool stains:

Sweep algae toward the main drain of the pool, using a pool rake. Unlike concrete pools, algae do not get trapped in the pores of fiberglass pools, so algae removal is simple.

  • Oily stains ( ex. lotion)

Remove oily stains from the waterline with non-abrasive household tile cleaner applied with a soft cloth or sponge.

  • Metal stains

Eliminate brown stains caused by iron by scrubbing the area with a chlorine tablet. If you cannot easily reach the spot to scrub it, duct tape the tablet to the end of a telescoping pole. Don’t rub too hard or you can damage the fiberglass surface.

Wipe away the cleaner and the scum with a non-abrasive cloth. If the residue is difficult to remove, gently scrub the scum with a soft pool brush.

Clean remaining residue until the pool is completely clean.


Do not use steel wool, metal scrapers, brushes or tools on the fiberglass pool. The pool’s gel coat finish may become permanently damaged.

Fiberglass pools need a gentler touch in terms of cleaning products and tools.

Harsh cleaners can damage the gel-coat and even change the water chemistry.

Use a damp rag and a simple pool cleaner to remove dirt and grime without damaging your pool.

And for all your pool needs call My Pool Guy for your pool guy!