Hello all,
I'm dealing with what appears to be plaster failure in my 30k gunite pool and any assistance from the forum members is greatly appreciated.
History:
When closing each year I drain the pool below the return lines (roughly 24") in order to blow out/plug the pipes; always open to a full pool based on the use of a mesh cover/rain and snow. Opening readings (K2006) in early May showed CH 100, TA 20 and high PH (dark red).
When we removed the cover this spring we found embedded algae stains that have not come out over the last weeks as we brought the water into balance. Current readings are FC 3, CH 375, TA 80, PH 7.8, CYA 70 (the water looks the best I've ever seen it, the plaster not so much with the stains...)
You can see in picture 1 the scale/flaking that is accumulating (which seem to be limited to a specific area); picture 2 shows the grit that is being captured by the Polaris; picture 3 is an example of the staining that does not brush off.
We did see what I believe was calcium scaling at the end of last summer (ie, raised nodules formed in the plaster) which seem to be gone now.
I also converted to a SWG this year (which is working well), not sure if this is a factor or not...
Thanks for reading and any help with a diagnosis/plan for remediation is welcome.
Mike
Picture 1
Picture 2
Picture 3
I'm dealing with what appears to be plaster failure in my 30k gunite pool and any assistance from the forum members is greatly appreciated.
History:
When closing each year I drain the pool below the return lines (roughly 24") in order to blow out/plug the pipes; always open to a full pool based on the use of a mesh cover/rain and snow. Opening readings (K2006) in early May showed CH 100, TA 20 and high PH (dark red).
When we removed the cover this spring we found embedded algae stains that have not come out over the last weeks as we brought the water into balance. Current readings are FC 3, CH 375, TA 80, PH 7.8, CYA 70 (the water looks the best I've ever seen it, the plaster not so much with the stains...)
You can see in picture 1 the scale/flaking that is accumulating (which seem to be limited to a specific area); picture 2 shows the grit that is being captured by the Polaris; picture 3 is an example of the staining that does not brush off.
We did see what I believe was calcium scaling at the end of last summer (ie, raised nodules formed in the plaster) which seem to be gone now.
I also converted to a SWG this year (which is working well), not sure if this is a factor or not...
Thanks for reading and any help with a diagnosis/plan for remediation is welcome.
Mike
Picture 1
Picture 2
Picture 3
