Testing High FC while Slamming

Miniduper

Member
Apr 19, 2020
19
Las vegas
I"m currently in the process of SLAMMING my pool. My current calculations require that I maintain a SLAM Target FC of 28 with my CYA being at 70. I would like to test the FC level morning and night however at this high of a FC i'm using nearly 56 drops of my Taylor R-0871 FAS-DPD agent per test even with the 0.5 measure. Any methods, tricks to conserve my reagent or is this just the way it has to be. Thanks
 
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Dirk

Gold Supporter
TFP Guide
Nov 12, 2017
7,738
Central California
Pool Size
12300
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Not sure what you mean by "the 0.5 measure." If you're using a 25ml or 10ml sample, you can reduce the sample to 5ml and one scoop of powder. So:
1 drop = 1.0
28 drops = FC 28

Not recommended for regular testing, but OK for a SLAM.

Depending on where you are in the SLAM, if you think there is even a remote possibility of running out of reagents, then order more now. The worst thing you can do now is run out mid-slam, which could really set you back.
 
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jark87

Silver Supporter
Jun 5, 2011
267
Flower Mound, TX
Pool Size
25500
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Plaster
Chlorine
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Jandy Aquapure 1400
you can reduce the sample to 5ml and one scoop of powder. FC = number of drops x 1.
I’m also in the middle of a SLAM and never knew this! Thank you - it will cut my reagent use in half! And will also save some time.
 

Dirk

Gold Supporter
TFP Guide
Nov 12, 2017
7,738
Central California
Pool Size
12300
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
It's a cheat, and you'll lose accuracy, but it's close enough for a SLAM. But go back to a 10ml sample for regular testing, or towards the end of the SLAM or for the OCLT. I've never used a 25ml sample, 10ml is fine for normal testing.

One of our experts swears by the 25ml sample for regular testing. He says the reagents are not expensive enough to justify the reduction in accuracy. So opinions differ.
 
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