Pool guy here. Scrub with wire brush, then scrub it with a tab then scrub again with wire brush. Thats black algae and it has roots!
2026-06-25 22:26:40
549
Tw :
Call trumps pool guy. He knows about algae 😁
2026-06-25 20:43:27
880
UsernameTom :
I’m a CPO and manage several large pools. You need to shock your pool then add algicide for black mold then scrub your plaster. Black mold has a hard shell that protects it. That why you need to get your chlorine level higher that 5ppm
2026-06-25 02:21:05
123
❌️❌️CHAD❌️❌️ :
you need copper
2026-06-26 02:03:49
105
jr1966 :
They're not brushing your walls or your pool.You have to brush
2026-06-25 19:45:38
55
IceJdog :
Hate to be barer of bad news. It’s black algae. It grows in the cracks and crevice of the plaster. I’m guessing the plaster feels like sandpaper the bad news it’s time to replace it.
2026-06-25 06:18:50
31
tiffff_1203 :
Black algae is usually caused by putting things in your pool that have been in natural bodies of water. We have separate floats for the pool and boat.
2026-06-25 13:26:27
16
Mig💙 :
It needs to be brushed everyday.
2026-06-25 22:54:01
34
Seauto Tech :
You need to scrub the black algae spots first, then vacuum up all dead spores, plus maintain balanced water chemistry long-term — one step alone won’t get rid of black algae for good 😥 try automatic pool Cleaner
2026-06-27 02:45:58
12
JOHNNY :
It’s called clean your pool 😎. Doesn’t matter if the Water tested good.
2026-06-29 18:14:58
17
Matthew Baier :
Circulation and a lot of brushing
2026-06-25 14:16:38
47
Lillian Landin-Longeway :
Black algae, no bueno! First drain and acid wash with a professional (do you homework) unfortunately not a 100 guaranteed, may need to be re-plasterd , depending on how many times you’ve had acid washing….from a professional previous pool owner, just my suggestion
2026-06-27 05:24:55
1
aardvarkcc1971 :
you know you still need to scrub your pool right
2026-06-25 02:52:25
13
Yep :
Call Donald. He is trying to figure the same thing on the National Mall
2026-06-28 02:23:43
5
sbrowne69 :
Brush your pool
2026-06-26 02:28:15
13
Spencer Ficken :
Copper in your skimmer basket
2026-06-26 00:16:11
12
YourHuckleberry :
brush it every day
2026-06-26 20:23:45
6
Christy :
It's normal. You have to brush the floor and walls to get it off.
2026-06-25 18:10:09
15
nolagirlkim :
Copper will fix it
2026-06-25 14:44:28
12
jacblack12 :
Brush it and shock it good
2026-06-26 01:04:25
7
TTGurl❌ :
You gotta brush that pool.
2026-06-26 02:58:46
6
beefcakeUSMC :
Pool RX.
2026-06-24 23:33:26
34
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