First back wash

[sadowlou]

FC= 21.5
CC= 5.5
TC= 27
ALK= 100
CYS= 95

We are on the recovery side of a very Green Pool. This morning I back washed the pool after filtering all night. I then topped off the pool to operating level. Now I'm back to filtering. Our plan is to bring the CYA level down by back washing a couple of times a day then adding water a little at a time until the water clears up.

• 
  

 

[Richard320]

You could also just vacuum to waste to lower the water level and avoid loading up the filter with any sludge you pick up off the floor. Just turn the dial to waste. It will send the water straight out the backwash line and bypass the filter completely.

 

[kimkats]

What he said ^^^^^^^^^^^^^^^^

Glad to have you back Richard!

Kim

 

[sadowlou]

Good evening all, Today just completed draining 3 ft. of water to waste. 3 pm. readings: Ph=7.4 FC=12 CC=0 TA=80 CYA=35. 3:30 PM. Added 2 gal. 8.25% Chlorine, Brushed pool. Tested again at 9:00 PM. PH=7.4 FC=12 TA=90 CYA=35.
Added 2 gal. 8.25% Chlorine. Lets see what tomorrow brings... Thank all of you for your support......Lou

 

[MarianParoo]

How's it going?

 

[sadowlou]

Hey Marian, Things are looking good. Let me start from the start of my SLAM procedure.
7/29/15 Started filling pool: Added 4 Gal. 8.25% Bleach. 7/30/15 Added 2 Gal. 8.25 % Bleach.
7/31/15 Pool is full. Ran pool on filter for 2 hrs. Tested water PH= 7.4 FC= 8.5 CC= 0 TA= 80 CYA = 35. At 3:30 PM I added 2 Gal. 8.25% bleach. At 9:00PM Tested water: PH= 7.4 FC= 12 CC= 0 TA= 90 CYA= 35. 8/1/15 9:30 AM. Backwashed Filter & Swept pool. 11:00 AM Water Test. PH= 7.6 FC=12 CC= 0 TC=12 Ta=80 CYA=35. Added 2 Gal. 8.25% Bleach. 1:00 PM Added 1 1/2 cups Acid to lower PH. Tested water at 10:00PM. FC=12 PH=7.4 TA=80. Aug. 2, 2015 Water Test 11:30 AM: FC=13.5 CC=0 TC= 13.5 . PH=7.4 TA=80. At 2:15 PM I vaccumed to waste some sedement from the bottom of the pool. At 7:45 PM added 1 Gal. 8.25% bleach. At 8:45 PM tested water: FC=15 CC=.5 TC= 14.5. Will record the OCLT results in the morning.

 

[MarianParoo]

Woot!!! Love that clarity!!! gorgeous!
That is after/before, right?

 

[sadowlou]

Aug. 3, 2015
Hey Marian, 6:45 AM. OCLT= 22 Drops (10ml) FC= 11.
7:15 AM. added 1 Gal. 8.25% bleach.
8:20 AM. FC= 29 drops/R-0871 FC= 14.5
cleaned baskets, and brushed pool.
8:30 PM. added 2 Gal. 8.25% bleach.
9:30 PM. FC=17.5 CC=0 TC=17.5.
Will test OCLT in the morning. :sad:
If the OCLT is not in proper range we will replace the sand in the filter. Sand is about 6 years old.

 

[zea3]

You shouldn't need to replace the sand in the filter. What you can do is deep clean the sand and break up any clumps. Remove the access dome and gently poke a water hose down into the sand. Try to avoid hitting the laterals. Let the water from the hose flow into the filter so dirty water and gunk flows out the top. Pull the hose out and re-insert an inch away and let the dirty water flow out again. Repeat this process over the entire surface of the sand bed. Once it has been cleaned put the top back on and set the multiport to rinse. Rinse the sand for a couple of minutes to re-seat the sand bed, and then set it back to filter.