Clearing Green and Muddy Pools in Stafford

Algae or clay? Reading the water first

After a storm, a Stafford pool can turn two colors at once. Algae makes water green. Clay silt carried in by runoff makes it tan, grey, or milky brown. From the patio they can look alike, but they need different treatment: chlorine kills algae and does nothing to suspended clay, so pouring shock into a muddy pool spends chemicals and days without clearing anything.

The first step is a test and a close look. If chlorine is reading and the water is still opaque, silt is the likely cause. If chlorine reads zero and the walls feel slick, it is algae, and it gets chlorine matched to the stabilizer level, hard brushing, and repeated filter cleaning. Plenty of post-storm pools have both. The algae is handled first, because it keeps growing while the clay is still settling.

Getting clay out without choking the filter

Fine clay is the slow part of a Stafford cleanup. It can slip through a filter or coat it fast, so once the algae is dead, the pump is allowed to rest long enough for the silt to drop to the floor. Then it is vacuumed slowly, straight to waste if the plumbing has that option, so the cloud does not rise again and the clay never passes back through the filter. A heavy load can take more than one round.

Vacuuming to waste sends pool water out with the silt, so the level drops and gets topped up between rounds. If the job calls for a deeper drawdown, timing matters on flat clay lots: right after a big rain, with the ground around the shell saturated, only as much water comes out as the work requires, and the rest can wait for drier days. Whatever goes back in is tap water, so the pool gets a full new test after the refill and is dosed from those numbers.

What older plaster shows once the water clears

Most Stafford homes are decades old, and a pool that age may carry plaster that has not been redone in years. Etched, rough plaster gives algae more places to hold on, including dark spots that shrug off a nylon brush. On that surface, walls, steps, and floor get worked repeatedly while chlorine stays high, with a stainless brush on stubborn spots where the finish can take it.

Clear water also exposes the surface itself. Stains, bare patches, or plaster that feels like sandpaper often remain after the algae is gone. A pool acid wash can freshen a stained but sound finish, while plaster that is worn through is a job for pool renovations. You hear which one applies, and neither has to happen right away.

From cleanup to a weekly routine

Stafford is a short drive from our Sugar Land office, so the return visits a silt-and-algae cleanup needs are short trips. Once the floor is clean and chlorine still tests strong the morning after a dose, weekly service keeps chlorine matched to stabilizer and the filter clean through the rest of storm season. If a storm brought branches, shingles, or floodwater rather than only rain, pool storm cleanup comes first, and this storm guide lists steps you can safely take yourself.

Notes that help on a muddy or green Stafford pool

• Keep everyone out of the water until the floor is visible
• Note whether the water is green, tan, or grey, and whether it changed after rain
• Tell us if muddy runoff crossed the coping, and from which side of the yard
• Net out leaves and branches you can reach safely
• Write down any chemicals you added and when, including clarifier or flocculant