diff --git a/svc/product_series_auto_scheduler.go b/svc/product_series_auto_scheduler.go
index 45aa158..a05dbea 100644
--- a/svc/product_series_auto_scheduler.go
+++ b/svc/product_series_auto_scheduler.go
@@ -292,9 +292,12 @@ func startProductSeriesAutoSchedulers(pgDB *sql.DB) {
 	apply := envBool("PRODUCT_SERIES_AUTO_APPLY", false)
 	deltaIntervalMin := envIntRange("PRODUCT_SERIES_DELTA_INTERVAL_MIN", 60, 5, 1440)
 	queueBatch := envIntRange("PRODUCT_SERIES_DELTA_BATCH_SIZE", 300, 10, 2000)
-	fullHH, fullMM := envHHMM("PRODUCT_SERIES_FULL_HHMM", 5, 30)
-	runFullOnStartup := envBool("PRODUCT_SERIES_FULL_RUN_ON_STARTUP", false)
-	runDeltaOnStartup := envBool("PRODUCT_SERIES_DELTA_RUN_ON_STARTUP", false)
+	fullHH, fullMM := envHHMM("PRODUCT_SERIES_FULL_HHMM", 5, 0)
+	// Deploys should not trigger heavy jobs. Startup runs are gated behind an extra allow flag so
+	// a stale/old env var value can't accidentally bring back "runs on every deploy" behavior.
+	allowStartupRuns := envBool("PRODUCT_SERIES_ALLOW_STARTUP_RUNS", false)
+	runFullOnStartup := allowStartupRuns && envBool("PRODUCT_SERIES_FULL_RUN_ON_STARTUP", false)
+	runDeltaOnStartup := allowStartupRuns && envBool("PRODUCT_SERIES_DELTA_RUN_ON_STARTUP", false)
 
 	var deltaRunning int32
 	var fullRunning int32
@@ -363,14 +366,14 @@ func startProductSeriesAutoSchedulers(pgDB *sql.DB) {
 			runFull("startup_manual")
 		}
 		for {
-			next := nextProductSeriesWeeklyRun(time.Now(), fullHH, fullMM)
+			next := nextProductSeriesDailyRun(time.Now(), fullHH, fullMM)
 			wait := time.Until(next)
 			if wait < 0 {
 				wait = time.Minute
 			}
 			log.Printf("[ProductSeriesFull] scheduled next_at=%s in=%s", next.Format(time.RFC3339), wait.Round(time.Second))
 			time.Sleep(wait)
-			runFull("weekly")
+			runFull("daily")
 		}
 	}()
 }
@@ -1578,15 +1581,13 @@ func nullableInt64ForAuto(v sql.NullInt64) any {
 	return v.Int64
 }
 
-func nextProductSeriesWeeklyRun(now time.Time, hh int, mm int) time.Time {
+func nextProductSeriesDailyRun(now time.Time, hh int, mm int) time.Time {
 	loc := now.Location()
 	base := time.Date(now.Year(), now.Month(), now.Day(), hh, mm, 0, 0, loc)
-	daysUntilMon := (int(time.Monday) - int(now.Weekday()) + 7) % 7
-	candidate := base.AddDate(0, 0, daysUntilMon)
-	if !candidate.After(now) {
-		candidate = candidate.AddDate(0, 0, 7)
+	if base.After(now) {
+		return base
 	}
-	return candidate
+	return base.AddDate(0, 0, 1)
 }
 
 func envBool(key string, fallback bool) bool {