My wife and I bought a house this past March in Wisconsin, and lucky me, it had a pool! I really had no idea how to maintain one, much less open it after winter, so the internet (and TFP) along with the local pool shop helped things a lot. I opened it late earlier this month and the pool was murky when I took the tarp off, which was expected because it was full of holes. The bottom was completely green and the rest was cloudy pool. I vacuumed to waste the bottom and my filter cleared up the cloudiness. The pool now is actually very clear, but something keeps growing on the bottom. I have an album for pictures at the end of the post, and I highlighted the marks at in the pool because it might be hard to see what I'm talking about. I've shocked the pool numerous times and it doesn't seem to make a difference. The marks are a lot darker than they show in the picture. If I vacuum out the pool in the morning, I can always expect to see more fester up by dusk.
To complicate matters, the guys at my pool store can't agree on what it is. Granted, when I talked to them the only information I told them was that it looked like someone was smearing tar marks on the bottom of the pool (Didn't have a picture on hand at the time). One guy thinks it could be pollen, which is possible I suppose because my zip code has had high to very high alerts for grass pollen this month, although I don't know how it would get under the solar cover so quickly. Another guy thinks it's mold permeating through the liner from a pool of water that's settled under the pool, which I think is also possible because I have staining on the outside pool walls and it appears the ground has settled against the pool, making the styrofoam or whatever pop up from the underground siding to the pool. (2nd and 3rd pictures in the album if I didn't explain that well). It's also hard to get a sample because it kicks up like a cloud of dust whenever anything disturbs it. Or it could be algae, I don't know at this point. Any idea's on what I am (or am not) dealing with?
Also, pool readings. These are the only things I can measure.
I know the pH and CYA are way off, that's a separate issue I'm trying to fix. I'm getting frustrated with the pool shop because none of their products seem to be raising these.
http://imgur.com/a/Fvws2 <------------Picture album