diff -r fd6d87d1c9ed -r 98536f6539ee www/import/from_brouwhulp.php
--- a/www/import/from_brouwhulp.php	Fri Feb 01 11:58:38 2019 +0100
+++ b/www/import/from_brouwhulp.php	Fri Feb 01 15:30:33 2019 +0100
@@ -1095,15 +1095,17 @@
 			echo "Unknown step TYPE " . $step->TYPE . PHP_EOL;
 
 		if ($step->INFUSE_AMOUNT)
-			$steps .= ',"step_infuse_amount":"' . floatval($step->INFUSE_AMOUNT) . '"';
+			$steps .= ',"step_infuse_amount":' . floatval($step->INFUSE_AMOUNT);
+		else
+			$steps .= ',"step_infuse_amount":0';
 		if ($step->STEP_TEMP)
-			$steps .= ',"step_temp":"' . floatval($step->STEP_TEMP) . '"';
+			$steps .= ',"step_temp":' . floatval($step->STEP_TEMP);
 		if ($step->STEP_TIME)
-			$steps .= ',"step_time":"' . floatval($step->STEP_TIME) . '"';
+			$steps .= ',"step_time":' . floatval($step->STEP_TIME);
 		if ($step->RAMP_TIME)
-			$steps .= ',"ramp_time":"' . floatval($step->RAMP_TIME) . '"';
+			$steps .= ',"ramp_time":' . floatval($step->RAMP_TIME);
 		if ($step->END_TEMP)
-			$steps .= ',"end_temp":"' . floatval($step->END_TEMP) . '"';
+			$steps .= ',"end_temp":' . floatval($step->END_TEMP);
 		$steps .= "}";
 	}
 	$steps .= ']';