If the normal treatments of flocculation and extra chlorine don't keep the algae under control you might need a phosphate remover.
this post was submitted on 23 Apr 2026
44 points (95.8% liked)
DIY
4190 readers
1 users here now
Share your self-made stuff and half-baked projects here.
Also check out !diy@beehaw.org
There is also a related XMPP chat.
founded 4 years ago
MODERATORS
Or train your children to not pee in the pool π
Just embrace pond at this point.
Get some aluminum sulfate (and something to adjust the pH for it) to flocculate those micro-algae.
... or some phosphate/ fertilizer for some extra fun π
And just in case society collapses, you can make some quick buck in the meantime selling your selfmade soilent green to the starving masses βΊοΈβ¨
Grow algae, collect and store.
you got this!! Become the pool guy you want to see in the world
i used to live on the 13th floor in an apartment on the Gold Coast in Australia. Across the canal at the end of winter the houses there all had pools looking like this... they'd then spend a week or two cleaning it up, swim in it 2 or 3 times, then it would eventually go back to looking like that. Seemed like a giant waste of resources and time, i'd swim laps at the community pool or cycle to the beach and swim laps in the enclosed swim area
Now my community pool here in Tasmania also looks like that over winter :) but they clean it all up and I swim laps for free in Summer. i do give the community group a donation once a year so i guess not 'free' per se.
good luck OP, plenty of like looking pools oot there ;)
Worst case, it could make a pretty cool sunken greenhouse if it gets enough light