Tracy D'arth Posted March 3, 2021 Report Share Posted March 3, 2021 Turn down the amount of flush water delivered if you can. Newbies always think they are still connected to the domestic water, gas, electricity and sewage systems of a city until they get used to being aboard. My black tank is 120 X 120 X 30 and lasts 2 people for 6 weeks if we don't have any visitors. A visiting shore based couple can fill it and empty our 1000 litre water tank in a day! If you think the tank is full, take out the discharge plug and dip it with something flexible like a length of hose. Link to comment Share on other sites More sharing options...
TheBiscuits Posted March 3, 2021 Report Share Posted March 3, 2021 1 minute ago, Tracy D'arth said: If you think the tank is full, take out the discharge plug and dip it with something flexible like a length of hose. It's best to not use your drinking water hose for this ... 1 Link to comment Share on other sites More sharing options...
robtheplod Posted March 3, 2021 Report Share Posted March 3, 2021 (edited) Never quite sure how much detail is 'acceptable' on toilet threads, but here goes! Does your pumpout have more buttons on it? On our pumpout we have a button that just sucks - doesn't put any water in so that's ideal just for wees... we've another that puts water in as long as you hold it so you choose how much if you want it.... your tank does seem small though, ours is 432 litres.. (assuming its 'unlined'!) You can clean the sensor, or take it out for testing.... not a nice job but not as unpleasant as I was expecting! Edited March 3, 2021 by robtheplod Link to comment Share on other sites More sharing options...
ditchcrawler Posted March 3, 2021 Report Share Posted March 3, 2021 We do 30 days for two of us. it would go loner but we dont risk it. Link to comment Share on other sites More sharing options...
Alan de Enfield Posted March 3, 2021 Report Share Posted March 3, 2021 12 minutes ago, ditchcrawler said: We do 30 days for two of us. it would go loner but we dont risk it. Best not, who'd cook your meals and wash your clothes? not worth the risk. 1 1 Link to comment Share on other sites More sharing options...
cuthound Posted March 3, 2021 Report Share Posted March 3, 2021 (edited) When I bought my boat it came with a tank full warning light, which lit when the tank was supposedly approaching full. I was worried what would happen if the lamp failed, so fitted an MCS waste tank gauge. These work by sensing air pressure as the tank fills and are pretty accurate provided the tank shape is regular. https://www.mcsboatproducts.co.uk/ I fitted the MCS gauge and found that the red light on the original tank sensor came on when the tank was 50% full! The MCS gauge quickly paid for itself by doubling the time between pumpouts ?. Edited March 3, 2021 by cuthound To remove a letter masquerading as a space Link to comment Share on other sites More sharing options...
ditchcrawler Posted March 3, 2021 Report Share Posted March 3, 2021 5 minutes ago, cuthound said: When I bought my boat it came with a tank full warning light, which lit when the tank was supposedly approaching full. I was worried what would happen if the lamp failed, so fitted an MCS waste tank gauge. These work by sensing air pressure as the tank fills and are pretty accurate provided the tank shape is regular. https://www.mcsboatproducts.co.uk/ I fitted the MCS gauge and found that the red light on the original tank sensor came on when the tank was 50% full! The MCS gauge quickly paid for itself by doubling the time between pumpouts ?. I look down the pan Link to comment Share on other sites More sharing options...
cuthound Posted March 3, 2021 Report Share Posted March 3, 2021 1 minute ago, ditchcrawler said: I look down the pan I can't do that. Mine's a macerator with a remote tank, not a dump through. 1 Link to comment Share on other sites More sharing options...
Bod Posted March 4, 2021 Report Share Posted March 4, 2021 If the tank is plastic, then placing a powerful torch against the tank, might show the level inside. Bod. Link to comment Share on other sites More sharing options...
bizzard Posted March 4, 2021 Report Share Posted March 4, 2021 (edited) Or drill a line of vertical close together holes starting at the top, to find the level of fullness. Edited March 4, 2021 by bizzard Link to comment Share on other sites More sharing options...
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