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Morning Jason, the following results were taken from 2 full buckets of RedSea sea salt (blue bucket).
Bucket #1
__Date________pH____Alk____Cal___Mag__Conductivity
03-Oct-14_____8.22___ 8.6____ 425___1260____52.4____(Slightly less salt used – 585g)
10-Oct-14_____8.22___ 8.9____ 430___1260____53.1
17-Oct-14_____8.24___ 9.1____ 425___1290____52.9
20-Oct-14_____8.23___ 8.6____ 440___1290____53.1
25-Oct-14_____8.15___ 9.1____ 435___1275____52.9
31-Oct-14_____8.20___ 8.8____ 425___1275____53.1
7-Nov-14_____ 8.19___ 8.8____ 430___1260____53.0
14-Nov-14____ 8.21___ 8.8____ 440___1290____53.2
21-Nov-14____ 8.21___ 9.1____ 435___1290____53.4
28-Nov-14____ 8.21___ 8.6____ 435___1290____52.9
6-Dec-14_____ 8.23___ 8.6____ 435___1275____53.0
12-Dec-14____ 8.30___ 8.9____ 430___1260____53.2
19-Dec-14____ 8.22___ 8.8____ 435___1260____52.9
27-Dec-14____ 8.21___ 8.9____ 440___1290____53.1
2-Jan-15______8.21___ 8.6____ 435___1275____53.1
9-Jan-15______8.29___ 8.9____ 440___1275____53.1
16-Jan-15_____8.45___ 8.6____ 440___1275____53.1
23-Jan-15_____8.40___ 8.8____ 430___1275____53.4
30-Jan-15_____8.46___ 8.6____ 435___1275____53.1
6-Feb-15______8.40___8.6____440___1290____52.9
8-Feb-15______8.40___8.6____450___1275____53.3
13-Feb-15_____8.46___8.9____440___1290____53.3
20-Feb-15_____8.42___8.8____435___1275____53.3
27-Feb-15_____8.45___8.8____435___1305____53.4
6-Mar-15_____ 8.48___8.8____430___1260____53.4
7-Mar-15_____ 8.44___8.6____430___1290____53.4
13-Mar-15____ 8.40___9.1____435___1290____53.2
20-Mar-15____ 8.43___8.9____440___1305____53.2
27-Mar-15____ 8.46___8.8____435___1290____53.4
03-Apr-15_____8.42___8.9____435___1305____53.2
06-Apr-15_____8.40___9.1____430___1275____53.4
11-Apr-15_____8.43___9.1____430___1290____52.9
17-Apr-15_____8.41___9.1____435___1290____53.4
21-Apr-15_____8.49___8.8____435___1275____53.2
24-Apr-15_____8.38___8.8____435___1260____53.1
01-May-15____8.46___ 8.8____430___1290____53.3
09-May-15____8.43___ 8.9____435___1275____53.1
Bucket #2
__Date________pH____Alk____Cal___Mag__Conductivity
16-May-15____8.36 __ 10.9___ 430___1260____53.1
22-May-15____8.37___ 8.9____425___1275____52.9
06-Jun-15_____8.34___8.9____440 __ 1290____53.0
11-Jul-15 _____ 8.34___8.9____435___1275____52.9
18-Jul-15 _____ 8.35___9.1____445___1260____52.9
25-Jul-15 _____ 8.37___8.9____445___1275____52.8
01-Aug-15 ____ 8.41___9.1____440___1260____52.9
08-Aug-15 ____ 8.33___9.1____440___1290____52.8
15-Aug-15 ____ 8.36___8.9____445___1260____52.7
22-Aug-15 ____ 8.36___8.6____440___1290____52.7
25-Aug-15 ____ ---- ___8.6____440___1260____52.7
29-Aug-15 ____ 8.35___8.9____445___1305____52.7
05-Sep-15____ 8.40___ 8.9____ 450___1320____52.6
12-Sep-15____ 8.37___ 9.1____ 450___1335____52.6
19-Sep-15____ 8.11___ 8.8____ 455___1305____53.3
29-Sep-15____ 8.33___ 8.9____ 450___1290____52.9
03-Oct-15_____8.37___ 8.8____ 445___1305____52.9
05-Oct-15_____8.39___ 8.6____ 450___1305____52.9
06-Oct-15_____8.38___ 8.6____ 450___1290____52.8
09-Oct-15_____8.17___ 8.8____ 440___1290____52.9
10-Oct-15_____8.39___ 8.8____ 440___1290____52.9
11-Oct-15_____8.40___ 8.6____ 455___1290____53.0
12-Oct-15_____8.39___ 8.8____ 445___1275____53.1
13-Oct-15_____8.41___ 8.8____ 450___1305____52.9
14-Oct-15_____8.38___ 8.6____ 455___1305____53.0
15-Oct-15_____8.42___ 8.8____ 455___1305____53.0
16-Oct-15_____8.42___ 8.6____ 455___1290____52.9
17-Oct-15_____8.44___ 8.6____ 445___1275____53.0
18-Oct-15_____8.44___ 8.6____ 450___1275____53.0
19-Oct-15_____8.40___ 8.8____ 450___1305____53.0
20-Oct-15_____8.40___ 8.8____ 450___1320____53.0
26-Oct-15_____8.39___ 8.9____ 450___1275____53.2
31-Oct-15_____8.36___ 8.5____ 450___1275____53.0
07-Nov-15 ____ 8.41___8.5____445___1275____53.0
Averages______pH____Alk____Cal____Mag___Cond
Bucket #1_____8.34___8.8____434___ 1280___53.1
Bucket #2_____8.37___8.8____446___ 1288___52.9
RedSea_______8.30___8.0____430___ 1280___****(at 35.5ppt/PSU)
All measurements were taken from batches of 15 litre prep water used for weekly water changes.
DI water was weighed on digital kitchen scales at 15kg and salt was weighed on digital pocket scales at 590g – both sets of scales were calibrated using M1 calibration weights.
The pH measurements were initially taken using a Pinpoint pH meter, then from early January in bucket #1, using a Myron TechPro II TH1 meter.
Alkalinity, calcium and magnesium measurements were all taken using Salifert test kits and are shown as dKH, ppm and ppm, respectively.
The conductivity measurements were taken using a Myron Ultrameter II 4P and are recorded in mS (millisiemens).
Myron meters were calibrated against traceable standards. Salifert test kits were checked against Fauna Marin Multireference – several test kits of each type were used.
Mixing methods
De-ionised water at sub 1ppm TDS (typically around 0.6ppm using Myron meter) was aerated with air containing levels of CO2 relative to outside values, at around 400ppm for up to 1 week, but mainly for ease of use. The aerator was switched off just prior to adding salt.
Two Tunze Nano-stream pumps were used in the mixing vessel to ensure thorough mixing for around 12 hours – pumps switched on before adding salt.
All of the 590g of salt was added at once (mainly for repeatability purposes) to the 15 litres of DI water, which clouded the water initially, but went clear after a short time.
No heater was used in the mixing container. The temperature of the water ranged from 15ºC to 22ºC, due to heat generated by the pumps and ambient temperatures.
Tests were conducted 12 to 18 hours after adding the salt.
I am approaching the end of a third bucket, with very similar results.
Sorry for the length of this post.
Regards
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