Chemical Orders: Difference between revisions
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{| class="wikitable" | {| class="wikitable" | ||
!rowspan=2|Year | !rowspan=2|Year | ||
!colspan=5|Order | !colspan=5|Order (Start of Season) | ||
!colspan=5|Inventory | !colspan=5|Inventory (End of Season) | ||
!colspan=5|Usage | !colspan=5|Usage | ||
|- | |- | ||
| Line 110: | Line 110: | ||
|8 | |8 | ||
|6 | |6 | ||
|colspan=5| | |colspan=5|Did Not Inventory (see 2024 notes) | ||
|colspan=5| | |colspan=5|Unknown | ||
|- | |||
!2024 | |||
|60 | |||
|160 | |||
|0 | |||
|8 | |||
|4 | |||
|21 | |||
|8 | |||
|0 | |||
|TBD | |||
|3 | |||
|colspan=5|Unknown | |||
|- | |||
!2025 | |||
|55 | |||
|172 | |||
|0 | |||
|8 | |||
|0 | |||
|colspan=5|TBD | |||
|colspan=5|TBD | |||
|} | |} | ||
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* The <b>Inventory</b> column contains the total number of units on-hand at the end of the season. | * The <b>Inventory</b> column contains the total number of units on-hand at the end of the season. | ||
* The <b>Usage</b> column contains the number of units used during the season (the prior year's inventory plus the order minus the usage). | * The <b>Usage</b> column contains the number of units used during the season (the prior year's inventory plus the order minus the usage). | ||
* <b>Ca(ClO)₂</b> is Calcium Hypochlorite | * <b>Ca(ClO)₂</b> is Calcium Hypochlorite - see 2024 notes for details. | ||
* <b>HCl</b> is hydrochloric (muriatic) acid, measured in 1-gallon containers. Typically 4 gallons are packed in a case. | * <b>HCl</b> is hydrochloric (muriatic) acid, measured in 1-gallon containers. Typically 4 gallons are packed in a case. | ||
* <b>CaCl₂</b> is calcium chloride, measured in 50-lb bags. | * <b>CaCl₂</b> is calcium chloride, measured in 50-lb bags. | ||
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However, excess purchase of sodium bicarbonate was necessary to keep the pool alkalinity in range (compared to data from 2016-2019). The amount of stabilizer in the pool was also regularly low. | However, excess purchase of sodium bicarbonate was necessary to keep the pool alkalinity in range (compared to data from 2016-2019). The amount of stabilizer in the pool was also regularly low. | ||
=== 2022 | === 2022 === | ||
Starting in 2022, it was determined that there is no need to purchase calcium chloride. The calcium added by the calcium hypochlorite, in addition to the hardness in the city water supply, is more than sufficient to keep the water hardness within desired bounds. | Starting in 2022, it was determined that there is no need to purchase calcium chloride. The calcium added by the calcium hypochlorite, in addition to the hardness in the city water supply, is more than sufficient to keep the water hardness within desired bounds. | ||
| Line 144: | Line 166: | ||
A high burn rate of sanitizer was observed in early 2022. A modest stabilizer level is deemed necessary in the pool water. | A high burn rate of sanitizer was observed in early 2022. A modest stabilizer level is deemed necessary in the pool water. | ||
=== 2024 === | |||
In 2024, the chlorinator was changed from an [https://accu-tab.com/ Accu-Tab] tablet system (which used 60-lb buckets) to a Pulsar briquette system (which uses 50-lb buckets). Inventory and usage to be noted as such. Unfortunately, it appears the during the changeover period, we did not inventory chemicals on-hand. So, usage for 2023 and 2024 is unknown (unless the missing inventory data is located). | |||
=== 2025 === | |||
Lacking data for usage in 2023 and 2024, it's a bit difficult to know how much chlorine is required. With 21 buckets on-hand, 55 additional buckets will be ordered. As these buckets are 50 lb, this will be equivalent to having about 61 x 60-lb buckets post-order. It's not clear if the Pulsar system uses more or less chlorine - again, lacking data (and also lacking supporting data for burn rate based on weather and pool usage). As acid was nearly depleted in 2024, ordering extra (172) for 2025 may make sense. If memory serves, we nearly ran out in 2023. | |||