Welcome aboard Big-Boat.
There is no way of telling unless you have tank monitors installed as Mike mentioned. Never hurts to pump out more often than not though. That will ensure you don't get surprised on your next outing and it'll help keep your tanks cleaner.
1989 Carver 3807 holding tank
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Viper
- CYO Supporter
- Posts: 6266
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 475 times
- Been thanked: 1791 times
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