Hi All,
My question up front: Why am I getting algae while following the TFP method?
I noticed my 2nd visible algae event in just 3 months after returning from a week long trip away from home.
A week ago, in anticipation of the week long trip; I left the pool at these levels:
FC: 8 (boosted it above target to stay safe) Left the SWCG to produce 3 FC per day (8 hours/75%) which was holding steady FC before I left.
CYA:70
PH: 7.5
TA: 70
Calcium:375
Salt: 3600
On day 5, I asked my neighbor to add 8 ounces of Acid. Based on history, I know the PH would be creeping up towards, 8.0 but wanted to treated lightly since he was not testing.
Upon returning, just before sunset, I noticed what looked to be light algae in some areas. I tested with these results:
FC:5.5
CYA:70
PH: 7.8
TA: 70
Calcium:375
Salt:3600
Because of the lighting, I was not positive of the presence of algae, but decided to conduct an OCLT. In the morning before sunrise the FC was 3.5. After sunrise, I confirm the presence of algae as it appeared light green and I could brush it off the surface. I started a SLAM this morning.
So, my question again:
Why am I getting algae? I have been using the TFP method, especially in regards to the FC/CYA ratio.
I appreciate any guidance.
Rex
My question up front: Why am I getting algae while following the TFP method?
I noticed my 2nd visible algae event in just 3 months after returning from a week long trip away from home.
A week ago, in anticipation of the week long trip; I left the pool at these levels:
FC: 8 (boosted it above target to stay safe) Left the SWCG to produce 3 FC per day (8 hours/75%) which was holding steady FC before I left.
CYA:70
PH: 7.5
TA: 70
Calcium:375
Salt: 3600
On day 5, I asked my neighbor to add 8 ounces of Acid. Based on history, I know the PH would be creeping up towards, 8.0 but wanted to treated lightly since he was not testing.
Upon returning, just before sunset, I noticed what looked to be light algae in some areas. I tested with these results:
FC:5.5
CYA:70
PH: 7.8
TA: 70
Calcium:375
Salt:3600
Because of the lighting, I was not positive of the presence of algae, but decided to conduct an OCLT. In the morning before sunrise the FC was 3.5. After sunrise, I confirm the presence of algae as it appeared light green and I could brush it off the surface. I started a SLAM this morning.
So, my question again:
Why am I getting algae? I have been using the TFP method, especially in regards to the FC/CYA ratio.
I appreciate any guidance.
Rex