Algae Only At Waterline Where Tiles Meet

[Swim138]

I've been following the TFP guidelines for maintenance and our pool has remained clear and sparkling but I cannot get rid of algae growing at waterline where tiles meet eachother. Do I need to get dremmel out and scrub these with something?

 

[mknauss]

Your signature shows an above ground pool -- do you have a new pool?

What are your test results?

 

[Swim138]

Oh wow, signature is wrong, not sure how that happened. Not a new pool. Test results for all tests that come with the TFP kit are within recommended ranges, except Calcium Chloride/Hardness. Our municipal water here is VERY hard and the hardness level keeps climbing but I'm adjusting pH to keep CSI within recommended range. Currently pH is at 7.5.

 

[mknauss]

Signature looks OK now -----

What are your test results?

 

[Jimrahbe]

138,

Do you have algae or scale.. Two very different things..

Thanks,

Jim R.

 

[Swim138]

Signature looks OK now -----

What are your test results?

138,

Do you have algae or scale.. Two very different things..

Thanks,

Jim R.

Both, really small amounts of scale only in that area and algae on top.

 

[Swim138]

Signature looks OK now -----

What are your test results?

FC-4
TA-120
CYA-50
pH-7.5
CH-825
temp-84
CSI-.48

 

[Swim138]

I'm thinking maybe I need to take dremmel with pumice attachment and get scale off of that small area between tiles at waterline because it is acting as nidus for algal growth?

 

[Jimrahbe]

S,

You have algae because you are just not keeping your FC high enough... With an CYA of 50 your FC should be 6 to 8...

Thanks,

Jim R.