Hi and thanks for all the info on this forum, I've found it so useful.
I bought a place with a pool last year. The house kind of came with a pool guy so I kept him going but a couple of months ago he just stopped coming, didn't tell me, and as it was raining and the cover was on I didn't notice that my pool became an algae swamp. A friend of a friend who is a pool guy helped me get rid of the algae, clean my DE filter, replace the grids.
The pool is now clear but green. The guy helping is now away but he thinks it is still algae and suggested Yellow Out and shock. I did that with 3 1/2 gal of 10% chlorine and brushed the pool walls to no effect. I currently have no chlorine according to my K-2006, I assume b/c it was used by the Yellow Out. I'm about to get more. My chlorine was 8ppm before the shock b/c my CYA is high (Using 3:1 dilution is looks like the CYA is 140). Both pool guys said not to bother draining the pool just use more chlorine. Having read this forum I'm not sure that's a great way to keep going.
I'll try to attach a photo of the staining, you can see it on the grout. I don't know if it is algae or metals but it doesn't scrub off easy (or at all with a regular pool brush). I haven't used a wire brush yet as I am concerned about damaging the concrete.
Any thoughts on if this is algae and how to resolve?
Thanks.
I bought a place with a pool last year. The house kind of came with a pool guy so I kept him going but a couple of months ago he just stopped coming, didn't tell me, and as it was raining and the cover was on I didn't notice that my pool became an algae swamp. A friend of a friend who is a pool guy helped me get rid of the algae, clean my DE filter, replace the grids.
The pool is now clear but green. The guy helping is now away but he thinks it is still algae and suggested Yellow Out and shock. I did that with 3 1/2 gal of 10% chlorine and brushed the pool walls to no effect. I currently have no chlorine according to my K-2006, I assume b/c it was used by the Yellow Out. I'm about to get more. My chlorine was 8ppm before the shock b/c my CYA is high (Using 3:1 dilution is looks like the CYA is 140). Both pool guys said not to bother draining the pool just use more chlorine. Having read this forum I'm not sure that's a great way to keep going.
I'll try to attach a photo of the staining, you can see it on the grout. I don't know if it is algae or metals but it doesn't scrub off easy (or at all with a regular pool brush). I haven't used a wire brush yet as I am concerned about damaging the concrete.
Any thoughts on if this is algae and how to resolve?
Thanks.