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no swg. The cya ran high all last summer near 100, was just holding out, hoping to keep the cya in an acceptable range as long as possible, but perhaps it is to low now. Also thought it would be better to get the pool in good shape from the winter before starting it up. Plan on filling it with...

I have been shocking for a week, up until last night. When I just put enough chlorine in to boost it up to 5ppm which held over night and just now has fallen to 3ppm at noon. The water is clear, no cc's register, just the stains now. That is my dilema, do I go back to shocking for the stains...

tried the puck last night as well as vitamin c, no significant change with either item. going to try it again later today and going on a hunt for a wire brush instead of the soft brush I have.

I'm trying to figure out if I need to keep shocking until those stains are gone. It looks like dirt but will not sweep away, those markings are also all over the shallow end bottom of the pool. I can hold a high chlorine level over night but nothing is making the stains go away. The only thing...

if you come up with any thoughts please let me know. We do have well water but it was filled 4 years ago and subsequent refills have been put through the water softener. I have no chlorine left in the pool from the shock treatment 2 days ago. How much chlorine would you suggest I put back in it...

well unfortunately neither the chlorine puck nor the vitamin c made any significant change. @flyweed I used the pool calculator and based on my cya level 29 was the actual suggested level for mustard algae but I didn't have enough bleach on hand to get past 24. Unless I've been misreading the...

gunite pool. starting its 4th year

Hope it posts

evidently I'm not skilled enough, I'll keep trying though. cam pics were to large, can't seem to get one from my email to here.

Pool was opened 7 days ago. due to a warm and wet winter it was black on opening. 7 days later and lots of work the water is pretty but the steps have a brown/tan maybe a little yellow stain or growth on them. There are a few places on the floor and wall of pool also that are tan to yellow...