For the water softener owner

One softener on the board. The house runs on a private well, and the water comes into the utility room hard: a Fleck 5600SXT, 48,000 grains, against the wall, the brine tank beside it, a sediment prefilter on the incoming line, a UV lamp on the outlet side. The brine tank salt gets topped up every 60 days or when the salt drops to the 6-inch refill line, whichever comes first. The resin cleaner goes in every 3 months on the 1st. The sediment prefilter cartridge swaps every 6 months or every 10,000 gallons through the water meter, whichever comes first. The well water lab test rides April 15 each year. The UV lamp is a yearly swap. That is the whole list, and it lives on one due board.

You know the last salt refill. August 1: two 40-pound bags of solar salt from Clearbrook Well & Water, $9 a bag, poured until the salt stood 24 inches deep. Say that once to Muse in the chat you already have open and the row is written, the receipt and the reading with it. Sixty days puts the next refill on September 30, 2026. On October 5 the salt reads 14 inches. On October 6 the board says the brine refill is due now, about 6 days late.

You know the other dates too. The resin cleaner went in July 1, a quart bottle for $16, and every 3 months on the 1st makes the next dose October 1, 2026, about 5 days late as of October 6. The prefilter cartridge was swapped June 1 at 52,000 gallons on the meter, a $14 cartridge, and every 6 months puts the next swap on December 1, 2026, with 56 days left. The UV lamp went in November 1, 2025, so the next lamp comes due November 1, 2026, about a month left. The well water lab test went to the lab April 20, 2026, $55 for the panel, and the April line puts the next one on April 15, 2027, 191 days left.

Before the next run to the salt aisle, ask Muse what's due on the softener. The brine refill comes back due now, about 6 days late, September 30 on the row. The resin cleaner comes back due, October 1, about 5 days late. The prefilter comes back with December 1 and the 56 days, the gallons line beside it. The UV lamp comes back with November 1 and the month left. The lab test comes back with April 15, 2027 and the 191 days. The board subtracts on the calendar and names what is left. You asked in the chat you already have open. There is no day-to-day owner app to click.

The brine refill is one job with two triggers, and the board fires whichever hits first. The 60-day clock came due September 30 while the salt still read 14 inches, 8 inches above the 6-inch line. The row says due now, and it does not borrow a later date from the salt reading: there is no invented date on a job that is already 6 days late. The salt reading keeps its own line, 8 inches of room above the refill line, checked whenever you lift the lid. Pour the two bags in, log the refill with the new salt depth, and the 60-day clock restarts from the day you poured.

When the clock has not fired, both triggers sit side by side on one row. A refill logged August 20 puts the next 60-day date at October 19, 2026, 12 days left as of October 6, and the same 14-inch reading from October 5 sits next to it with its own arithmetic: 8 inches of runway, the level falling about 10 inches in 46 days at the pace this tank burns salt. October 19 wins the row because it lands first. And a reading can beat both: lift the lid, read 5 inches of salt, tell Muse, and the refill comes due on the spot, 1 inch under the line, whatever the calendar said.

The prefilter carries the same shape: every 6 months, or every 10,000 gallons through the meter, whichever comes first. The last swap was June 1 at 52,000 gallons. The meter read 60,000 on October 5, so 8,000 gallons have gone through and 2,000 are left. At the pace this house has been running water, the gallons line lands around November 5, ahead of the December 1 clock, and the row shows both. If the meter hits 62,500 first, the cartridge is due that day, 500 gallons past the 10,000 mark, with December 1 still named on the row.

The softener gets the observation habit too. Hard water spots coming back on the faucet, soap that stopped lathering, salt bridging over the water line in the brine tank, a damp patch on the floor under the brine tank: tell Muse what you saw in the same breath as the date. Muse keeps each one as a note on that line, so the softener's history rides with the softener instead of on the notepad taped inside the utility room door. Mention the salt bridge when you log the next refill and the note lands on that row.

The board can call ChatGPT too. Subscribe once and ChatGPT hears when the brine refill lands on the due board: a signed webhook names the job and how late, so you are not carrying a 60-day count around in your head. An agent that speaks MCP can hear the same board. You did not have to ask first.

Every row you log stays in the service log: salt refills with the bag count and the cost, resin cleaner doses with the bottle price, prefilter cartridges with their receipts from Clearbrook Well & Water, UV lamps, and the April lab results with the numbers on them. So the day the house sells, say it once: archived. Muse archives the softener and the due board drops it that day, and the history stays: years of refill dates, what the salt cost by the bag, which April the lab came back clean. If the deal falls through, one ask puts it back on the board.

One line, said plainly: Maintenance Due is a personal due board and service log for the softener. It keeps the notes you give it. The April lab test measures the water, and the board counts the days and the readings you tell it.

The house log on /home-maintenance-checklist shows how calendar rows look. Copy the prompt on /for-your-agent and paste it into Muse. Free.