I'll start by saying that this site has been very informative and I feel like I'm learning a lot. But it seems the more I learn, the more I realize that there is so much I don't know.
So here's my novel. Please bear with me.
My story is pretty much the same as so many others on here. Bought a house with a pool. Hired a service because we knew nothing about pools and went along happily for a year or so.
Well, sort of happy. According to the service, we battled mustard algae regularly and once a week service couldn't cut it. So I found myself going to the pool store and spending a ton of money on top of paying someone to take care of my pool.
My husband finally said enough is enough. We let go of the pool service and I took over upkeep. Found this site and started the TFP method. The pool has never looked better. I, of course, discovered that my CYA was way too high thanks to pucks. From what I could tell with a 4 to 1 dilution it was around 280. Calcium was 675 - probably due to the constant shocking for the algae.
Through reading, I discovered that what our pool guy kept calling a mustard algae was actually metal staining. No wonder it never went away when he was shocking the heck out of it!
I did the ascorbic acid treatment with wonderful results, but thought I saw evidence of calcium scaling. We did a series of partial drain/refills with a lot of help from the all the rain and have gotten those numbers down.
The latest set of numbers are:
Water Temp 86-89
Ph 7.3 (pool likes 7.5 but trying to keep it lower to help with scaling?)
Borates 15 (will bring that up to 50 when I get the other stuff sorted)
Salt 1180 (added based on several people recommending it on this site)
According to pool math, this has my CSI at -.12. I believe that is good.
I have been using ProTeam Metal Magic to sequester the metals. Two days ago I decided to add Scaletec Plus to see if it would help with the scaling. Last dose of Metal Magic was a week before. I added 128 oz of the Scaletec which was about 60 oz short of what was recommended. Within a couple of hours the pool went pretty cloudy. I panicked a little but read somewhere that this could happen. So I let the filter work and it is almost perfectly clear. Pre TFP I would have said it is clear. Then today, I found a chunk of white, gritty "rock" that crumbles easily in the basket part of my filter pump. I have attempted to attach a picture of it. Can someone help me determine whether it is calcium? Did this come off my pipes and if so can I assume more is in there?
And most importantly, did I totally screw something up by adding too much "stuff" to my pool?
Thanks for any advice/ help with this.