- Oct 12, 2013
- 38
We inherited a pool with our new house in August. I've had trouble with algae, water will be crystal clear for awhile, I'll brush sides and bottom and see a green film arise. Pool then turns cloudy green, and I'll SLAM again. I've done this three times. Granted, I may be messing up the SLAM process, but I will meet all criteria for couple days in a row before I quit.
The pool does need to be resurfaced so I thought rough areas on floor and walls was giving algae place to hide and make hard to kill. After my 12K-13K resurface estimate, I decided I wanted to look at filter. I did find out from guy who took care of pool for former owner that he thinks they changed changed sand 5-6 years ago.
This past weekend, we opened filter. The freeboard was 15 inches and the manual for our model (Triton TR-60) specifies a freeboard of 10.5 inches. So that could have been some of our problems, sand loss over time. The question I have is about the sand we removed, it was greenish tint. I have a picture below of clean sand, and the sand removed. Has anyone ever seen sand like this? I was told by the former pool guy that the owners used a mineral pack system. I looked that up and it says the minerals contain copper. I'm am not doing the mineral system. The feeder is still in place but empty. I'm using the BBB method.
:?: Would mineral packs cause the green sand?
:?: Could my algae issue be caused by the low sand level. Was the green sand a problem?
I'm currently on Day 4 of SLAM (Target FC 22 with CyA of 55). My OCLT has been zero for 3 days. The CC is zero. The water is now a white cloudy vs green cloudy and drain is visible. I still see a greenish dust stirred up when I brush however, it is more whitish than green now. I am going to continue SLAM until I don't see the green when brushing.
:?: The filter pressure increased 5 psig during the first 24 hrs of SLAM. I backwashed. It has increased 1 psig in 2 days. I'm considering adding some DE. Should this only be done when I need some help filtering, such as during SLAM. Or can this method be used on a normal basis, after every backwash?
:?: Do I need to vacuum when done if I don't see any dead algae on bottom. I'm not sure if the white powdery stuff I disturb while brushing is dead algae or pool surface coming off.
The pool does need to be resurfaced so I thought rough areas on floor and walls was giving algae place to hide and make hard to kill. After my 12K-13K resurface estimate, I decided I wanted to look at filter. I did find out from guy who took care of pool for former owner that he thinks they changed changed sand 5-6 years ago.
This past weekend, we opened filter. The freeboard was 15 inches and the manual for our model (Triton TR-60) specifies a freeboard of 10.5 inches. So that could have been some of our problems, sand loss over time. The question I have is about the sand we removed, it was greenish tint. I have a picture below of clean sand, and the sand removed. Has anyone ever seen sand like this? I was told by the former pool guy that the owners used a mineral pack system. I looked that up and it says the minerals contain copper. I'm am not doing the mineral system. The feeder is still in place but empty. I'm using the BBB method.
:?: Would mineral packs cause the green sand?
:?: Could my algae issue be caused by the low sand level. Was the green sand a problem?
I'm currently on Day 4 of SLAM (Target FC 22 with CyA of 55). My OCLT has been zero for 3 days. The CC is zero. The water is now a white cloudy vs green cloudy and drain is visible. I still see a greenish dust stirred up when I brush however, it is more whitish than green now. I am going to continue SLAM until I don't see the green when brushing.
:?: The filter pressure increased 5 psig during the first 24 hrs of SLAM. I backwashed. It has increased 1 psig in 2 days. I'm considering adding some DE. Should this only be done when I need some help filtering, such as during SLAM. Or can this method be used on a normal basis, after every backwash?
:?: Do I need to vacuum when done if I don't see any dead algae on bottom. I'm not sure if the white powdery stuff I disturb while brushing is dead algae or pool surface coming off.