Brad_C
Well-known member
- Nov 15, 2018
- 217
- Pool Size
- 19000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Monarch ESC24 / ESC7000
A) What has returned? Green cloud? Green water? Light green stuff on the pool surface?
B) What is your CYA level? You answered that while I was typing.
I'm in a similar boat in that I found some light green surface algae around the mouth of my skimmer (we're talking like a faint paint overspray rather than spots), and my FC hasn't dipped below 8 (in fact I'm struggling to get it below 10!). What I found was it was sitting/growing on the surface, but a quick brush and it was dead and gone. Looking at the water flow in the pool, it's logical than any algae that is blown in would find its way to the corner with the skimmer in it.
I'm pretty sure I have a mustard algae spot in some of the worn fibreglass in the deep end of mine that I just can't seem to get to. It's right in the most shaded corner of the pool and it's exactly "mustard yellow" (other wise known as that baby**** colour Volvo used in the 70s), but in a spot where I can't "pool" cal-hypo on it. I'm thinking I might have to cable-tie a sock full of HTH onto the end of the pole or something to give it a good going over. I had the same colour in another area of the pool, but that was the low point and a couple of hundred g of HTH into a dead still pool saw that off in an hour or so.
As long as I give it the pool a brush somewhere between weekly and fortnightly I get pretty much nothing. If I leave it longer then I see the little clouds behind the brush head, but once the brush hits it, it's dead. It's almost like it has a chlorine resistant coating and the brush just breaks it up.
I'm in a similar boat in that I found some light green surface algae around the mouth of my skimmer (we're talking like a faint paint overspray rather than spots), and my FC hasn't dipped below 8 (in fact I'm struggling to get it below 10!). What I found was it was sitting/growing on the surface, but a quick brush and it was dead and gone. Looking at the water flow in the pool, it's logical than any algae that is blown in would find its way to the corner with the skimmer in it.
I'm pretty sure I have a mustard algae spot in some of the worn fibreglass in the deep end of mine that I just can't seem to get to. It's right in the most shaded corner of the pool and it's exactly "mustard yellow" (other wise known as that baby**** colour Volvo used in the 70s), but in a spot where I can't "pool" cal-hypo on it. I'm thinking I might have to cable-tie a sock full of HTH onto the end of the pole or something to give it a good going over. I had the same colour in another area of the pool, but that was the low point and a couple of hundred g of HTH into a dead still pool saw that off in an hour or so.
As long as I give it the pool a brush somewhere between weekly and fortnightly I get pretty much nothing. If I leave it longer then I see the little clouds behind the brush head, but once the brush hits it, it's dead. It's almost like it has a chlorine resistant coating and the brush just breaks it up.